Mitsui Fudosan Co., Ltd. The singing voices of office workers echo through Nishi-Shinjuku as the 48th Shinjuku Mitsui Building Inter-Company Singing Contest, a summer tradition, is being held!

[Mitsui Fudosan Co., Ltd.] The voices of office workers echo throughout Nishi-Shinjuku as the summer tradition “The 48th Shinjuku Mitsui Building Company Singing Contest” is being held! ​
Mitsui Fudosan Co., Ltd. Press release: September 4, 2025 The 48th Shinjuku Mitsui Building Inter-Company Singing Contest, a summer tradition where the singing voices of office workers echo through Nishi-Shinjuku, is being held! Three exciting days with 93 groups from 56 companies Key Points of This Letter – A company-to-company singing contest featuring tenant companies of the Shinjuku Mitsui Building was held from August 27th to 29th. – The contest has been held since the building’s completion, and this marks the 48th anniversary of the contest, a milestone in the building’s history. – A total of 93 teams from 56 companies, more than half of the tenant companies,
participated, with Tarly-ya Co., Ltd. taking the win. – The event provided an opportunity for encounters across corporate boundaries, creating an atmosphere of real-world excitement and a sense of connection over the three days. Mitsui Fudosan Co., Ltd.
(Headquarters: Chuo-ku, Tokyo; President and CEO: Shun Ueda) held the 48th Shinjuku Mitsui Building Inter-Company Singing Contest from Wednesday, August 27th to Friday, August 29th. This year, 56 companies and a total of 93 groups participated. Throughout the three days, participants, supporters, and spectators worked together to liven up the venue, engaging in the intense, high-level competition that only a real-life event could offer.
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-f210983e99afd7e07d337f30985bd52f-1019×588.png

Winner: Tarlyya Co., Ltd. (third from the left) This event is a karaoke competition open only to tenant companies in the Shinjuku Mitsui Building. First held in 1975, this year marks its 48th anniversary, making it a major summer tradition. Participants are limited to three teams per company, and some companies select participants internally. In addition to singing ability, the elaborate productions and the united support of employees are also highlights. Once again, the excitement in the venue continued from the first day of the preliminaries, with fierce competition unfolding. Only 20 teams made it through the preliminaries and advanced to the finals on the third day. When the finalists for each day were announced, cheers of joy and surprise were heard, tears of frustration were shed, and teams were seen praising each other’s efforts. The winning team, Tariya Co., Ltd., was presented with the grand prize by guest judge Hitomi. All prizes were sponsored by tenant companies, and winners received luxurious prizes such as travel vouchers, home appliances, and meal vouchers. The large amounts of confetti that flew onto the stage were made from shredded paper in consideration of the environment. Along with loud cheers, the cheering squad threw the confetti onto the stage with their own hands in time with the songs, further livening up the event. Under the slogan “COLORFUL WORK,” we aim to promote
communication within our tenant companies and interaction between them through these initiatives, providing a comfortable working environment that further increases employee engagement from a softer perspective. ■ Situation on the day of the tournament
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-ae84337aab7e026cc2a620919863a12d-750×394.png A stunning performance that swept the audience into a frenzy Image
URL: https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-fa7bd19a3701bd478a15bdd721901a2b-702×394.png A stage with confetti flying
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-6f02b116060f443a3bdb21ef31778fae-537×307.png The venue is filled with tension as the fateful results are announced.
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-3ce1dc6f7474f86c7f808001e49c5ac4-703×399.png Expressions of joy overflowing after achieving their long-awaited victory ■Results Winner: Tarly-ya Co., Ltd. Runner-up: Mitsui Home Estate Co., Ltd. 3rd Place: Sompo Japan Partners, Inc. Support Award: Shinjuku Mitsui Building Post Office Best Performance Award: Sonoda & Kobayashi Patent Attorneys Firm ■Comments from Participants ・Winner: “Tally-ya Co., Ltd.” “I’m really happy to have won on my first try. I’d like to express my gratitude to everyone working at Tareeya.” – Participants “I practiced for a year, but I’m disappointed that I lost in the preliminaries. I want to try again next year.” “I’m happy to have been able to stand on the stage I’ve always dreamed of.” “The time we spent working hard together as a company has become an unforgettable memory.” Background of this event Our company’s slogan is “COLORFUL WORK,” and we implement a variety of measures to enrich not only the on-time but also the off-time of everyone working in Mitsui offices. This event, held as part of this effort, has also been called Shinjuku’s “cultural festival for working adults,” and has promoted communication both inside and outside the company as an event that adults can seriously participate in. While new work styles such as remote work are becoming more common, lack of communication remains a challenge for companies. Through these events, we aim to connect employees of tenant companies in a real space, fostering new forms of communication and contributing to improved employee engagement. Please refer to the “&BIZ” website for content for tenant employees promoted by “Mitsui Office,” such as sports and team-based events that contribute to stimulating internal and external communication, family events, D&I and SDGs events, and seminars on childcare, elderly care, and business skills development. “&BIZ” website: https://and-biz.jp/ Shinjuku Mitsui Building Company Singing Contest Overview ■Date and time Wednesday, August 27, 2025 – Friday, August 29, 2025 *Preliminary tournament on 27th and 28th, final tournament on 29th ■Venue Shinjuku Mitsui Building 55HIROBA (Location: 2-1-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo) ■Judges Kaoru Saito Former director of Nichion Co., Ltd. and former president and CEO of Nichion Planning Co., Ltd. He currently works as a freelance producer. He has previously served as Director of Production Division 6 at TBS Entertainment, Director of Programming at TBS Radio, and Director of the Video Business Department at TBS Television (responsible for movies, DVDs, and anime). Kenta Sugawara He has worked in the label business at Fun House Co., Ltd. and other companies. He then worked as an artist manager at Avex Management Inc. He is currently working as a general producer at Avex Music Creative Inc., creating various planned content related to Avex’s artists and music from the 1990s. ■Guests Guests performed songs on each day, livening up the tournament. August 27th (Wednesday): Tokyo Girls’ Style August 28th (Thursday): Sasaki Osamu from MOON CHILD August 29th (Friday): hitomi ■List of Participating Companies and Organizations (Alphabetical Order) iCube Marketing, Inc. Accommodation First Co., Ltd. Atorasu 21 Co., Ltd. Aflac Life Insurance Co., Ltd. AMICUS Co., Ltd. Will of Construction Co., Ltd. Webster Co., Ltd. Autumn Co., Ltd. Onda International Patent Office, Patent Attorney Corporation Canadian Solar Projects Co., Ltd. Capcom Co., Ltd. Career Mart Co., Ltd. Career Link Co., Ltd. Green Eight Co., Ltd. Green House Foods Co., Ltd. Cresco Nexio Co., Ltd. Connectee Co., Ltd. Sanwa Holdings Co., Ltd. JTB Corporation JU Corporation, Inc. Systems Design, Inc. Shinken Ad Co., Ltd. Shinjuku Mitsui Club Shinjuku Mitsui Building Post Office Starbucks Coffee Japan Co., Ltd. Spanish dining Rico Spal Kogyo Co., Ltd. Trattoria La Verde Nishi-Shinjuku Branch Senon Co., Ltd. Sonoda & Kobayashi Patent Attorneys’ Firm Sompo Japan Partners Co., Ltd. Sen’ya Co., Ltd. Technication Co., Ltd. Tarlyya Co., Ltd. Chuo Office Co., Ltd. Judicial Scrivener Corporation Central Office Tokyo Software Co., Ltd. Tokyo Fabric Industries Co., Ltd. Totec Amenity Co., Ltd. Top Co., Ltd. Nihon Logicom Co., Ltd. New Tokyoton Shinjuku Mitsui Building Co., Ltd. Persol Cross Technology Co., Ltd. Benesse Corporation Bell Data Corporation Mamezou Co., Ltd. Marugame Seimen Sumitomo Mitsui Banking Corporation Mitsui Designtec Co., Ltd. Mitsui Fudosan Co., Ltd. Mitsui Fudosan Building Management Co., Ltd. Mitsui Fudosan Realty Co., Ltd. Mitsui Fudosan Residential Lease Co., Ltd. Mitsui Home Co., Ltd. Mitsui Home Estate Co., Ltd. milab Inc. Royal Host Shinjuku Mitsui Building Branch Mitsui Office Slogan and Services Provided ■About “COLORFUL WORK” In its office building business, Mitsui Fudosan’s slogan is “COLORFUL WORK.” We strive to diversify workplaces and work styles through a variety of services, enabling everyone to work in a way that reflects their individual personalities and realize a variety of lifestyles, rather than simply “working.” Through these initiatives, we will support the realization of new work styles that enable all users of Mitsui offices to enjoy fulfilling work and life. For more information about “COLORFUL WORK,” please visit the website below. https://www.mitsuifudosan-office.jp/ ■About “&BIZ” “&BIZ” is the collective term for various services offered by Mitsui Offices for tenant workers across the “town,” “workplace,” and “wellness” dimensions to foster quality communication.
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-0012a5e5f1d21e5aa9d299d316451b83-369×204.png ＆BIZ portal site This is a portal site that covers all the services offered by Mitsui Office. Membership offers access to disaster prevention information, such as evacuation routes and AED locations in your building, as well as benefits in a wide range of areas, including commercial facilities, hotels, resorts, and housing operated by the Mitsui Fudosan Group. We also offer a diverse lineup of events, including those that promote communication both inside and outside the company, and seminars on improving business skills and nursing care.
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-4123cfc162a360a5b23bc178de8fc8c9-477×241.png ＆BIZ event To create opportunities for deeper interaction both inside and outside the company, we implement various initiatives, such as inter-company sports events. We create opportunities for interaction both inside and outside the company.
https://prcdn.freetls.fastly.net/release_image/51782/889/51782-889-862b6accf3db80ad203a0a71d846d7d2-480×249.png ■About the Mitsui Fudosan Group’s Sustainability Based on the philosophy of the “& mark,” which states, “We create new value through coexistence, coexistence, and co-creation, and we will continue to take on the challenge of achieving this,” the Mitsui Fudosan Group views “creating social value” and “creating economic value” as two wheels of a cart. We believe that creating social value leads to creating economic value, and that this economic value will in turn create even greater social value. When we formulated our new Group Management Philosophy in April 2024, we identified six “GROUP MATERIALITY (priority issues)”: “1. Contributing to industrial competitiveness,” “2. Coexistence with the environment,” “3. Health and vitality,” “4. Safety and security,” “5. Diversity and inclusion,” and “6. Compliance and governance.” We will address these material issues through our core business and contribute to sustainability. [Reference] ・”Group long-term management policy”
https://www.mitsuifudosan.co.jp/corporate/innovation2030/ ・”Group Materiality” https://www.mitsuifudosan.co.jp/esg_csr/approach/materiality/