I've been more focused on requesting buildings that still don't have entries in the database, and mainly those U/C, but now it's time to start updating some entries that have already been completed:
1. Blue Front Shibaura Tower S (228.88 m, 43 fl)
https://skyscraperpage.com/cities/?buildingID=112634

source:
ハック3LDK @towerhack on X and
skyskysky.net
Completed on February 28, 2025 (Completion Ceremony: March 5, 2025)
TOWER S to open in its entirety in September 2025
Building Name:
Blue Front Shibaura Tower S (it's "Tower S" and not "S Tower")
Other Names:
Fairmont Tokyo / フェアモント東京
Street Address:
1-1-1 Shibaura, Minato-ku, Tokyo
Official sources:
https://www.nomura-re.co.jp/cfiles/news/n2025030602605.pdf
Unofficial sources:
https://skyskysky.net/construction/202308.html
Official Building Website URL:
https://www.bluefrontshibaura.com/
Current Building Status:
Built
2. World Tower Residence (185.49, 46 fl)
https://skyscraperpage.com/cities/?buildingID=147016

source:
skyskysky.net
It was completed in November 2024, as planned. Move-in was last month.
Other Names:
WTC annex / WTCアネックス
Street Address:
2-3-9 Hamamatsucho, Minato-ku, Tokyo
Architect(s):
RIA - Research Institute of Architecture / Kajima Corporation
Developer:
Hamamatsucho 2-chome District Urban Redevelopment Association (World Trade Center Building, Inc. / Kajima Corporation / Mitsui Fudosan Residential / Mitsubishi Jisho Residence / Tokyo Tatemono)
Official sources:
https://tatemono.com/news/20250306-2.html
Unofficial sources:
https://skyskysky.net/construction/202107.html
Interesting Facts/Records:
Total Floor Area: 74,861 sqm. (an adjacent smaller building is included in this figure)
Heights--
- roof:
181.04 m (highest point: 185.49 m)
Current Building Status:
Built
Unit count:
389
Building Use(s):
Residential (389 units), office, retail, restaurant, parking (mainly residential)
3. Toranomon Alcea Tower (184.93 m, 38 fl)
https://skyscraperpage.com/cities/?buildingID=139141

source:
skyskysky.net
Completed on Valentine's Day
Street Address:
2-2-3 Toranomon, Minato-ku, Tokyo
Developer:
Urban Renaissance Agency / Toranomon Energy Service (District Heating and Cooling Facility) (Taisei Corporation was the construction company)
Unofficial sources:
https://skyskysky.net/construction/202202.html
Official Building Website URL:
https://alceatower.nskre.co.jp/
Coordinates:
35.66900319356004, 139.7462226927531 (more centered compared to the coordinates in the database)
Current Building Status:
Built
4. Takanawa Gateway City The Linkpillar 1 North (161.43, 29 fl)
https://skyscraperpage.com/cities/?buildingID=147041

source:
kenbiya.com and
bluestyle.livedoor.biz
Completed and opened roughly a month ago.
Street Address:
2-21-21 Takanawa, Minato-ku, Tokyo
Architect(s):
JR East Design Corporation / JR East Consultants Company / Nihon Sekkei / Nikken Sekkei
Official sources:
https://www.jreast.co.jp/press/2023/20240305_ho02.pdf
Unofficial sources:
https://skyskysky.net/construction/202411-2.html
Interesting Facts/Records:
Total Floor Area: 459,567 sqm. (The Linkpillar 1 North and South) (optional: switch the order for easier reading?)
Official Building Website URL:
https://www.takanawagateway-city.com/en/
Current Building Status:
Built
Building Use(s):
Office, retail, restaurant, meeting hall (conference?), parking
5. Takanawa Gateway City The Linkpillar 1 South (158.68 m, 30 fl)
https://skyscraperpage.com/cities/?buildingID=147042
Other Names:
JW Marriott Hotel Tokyo / JWマリオット・ホテル東京
Street Address:
2-21 Takanawa, Minato-ku, Tokyo
Architect(s):
JR East Design Corporation / JR East Consultants Company / Nihon Sekkei / Nikken Sekkei
Official sources:
https://www.jreast.co.jp/press/2023/20240305_ho02.pdf
Unofficial sources:
https://skyskysky.net/construction/202411-2.html
Interesting Facts/Records:
Total Floor Area: 459,567 sqm. (The Linkpillar 1 North and South) (alternatively, remove the floor area info, as it's already included in the North building's entry)
Official Building Website URL:
https://www.takanawagateway-city.com/en/
Current Building Status:
Built
Unit count:
200
Building Use(s):
Office, hotel (approx. 200 rooms), retail, restaurant, meeting hall, parking
6. Sumitomo Fudosan Roppongi Central Tower (140.96 m, 21 fl)
https://skyscraperpage.com/cities/?buildingID=140198

source:
skyskysky.net
Completed in late January.
Street Address:
7-15-9 Roppongi, Minato-ku, Tokyo
Architect(s):
Nikken Sekkei
Developer:
Sumitomo Realty & Development
Unofficial sources:
https://skyskysky.net/construction/202461.html
Current Building Status:
Built
7. Classy Tower Shinjuku Gyoen (132.15 m, 35 fl)
https://skyscraperpage.com/cities/?buildingID=157434

source:
axel-home.com and
skyskysky.net
Completed in November 2024.
Street Address:
4-29-3 Yotsuya, Shinjuku-ku, Tokyo (slightly more compact compared to the one in the database)
Architect(s):
Nikken Housing System / Kajima Corporation
Unofficial sources:
https://skyskysky.net/construction/202436.html
Interesting Facts/Records:
Total Floor Area: 32,321 sqm.
Current Building Status:
Built
Construction Dates--
- finished:
2024 (March 2025 was the date of move-in/occupancy)
8. Proud Tower Hirai (114.45 m, 29 fl)
https://skyscraperpage.com/cities/?buildingID=157593

source:
skyskysky.net
Completed either in November 2024 or in January 2025
Other Names:
Hirai Terrace / 平井テラス
Street Address:
5-17-1 Hirai, Edogawa-ku, Tokyo
Architect(s):
AXS Satow / Maeda Corporation
Developer:
Hirai 5-chome Station Area Urban Redevelopment Association (Nomura Real Estate / Hankyu Hanshin Properties
Unofficial sources:
https://skyskysky.net/construction/202226.html
Official Building Website URL:
https://www.proud-web.jp/mansion/b115580/
Current Building Status:
Built
Building Use(s):
Residential, education (nursery school), office, parking, retail (mainly residential)
9. Proud Tower Shibuya (87.64 m, 26 fl)
https://skyscraperpage.com/cities/?buildingID=157773

source:
bluestyle.livedoor.biz
Completed last month. Move-in in late June.
Architect(s):
IAO Takeda Architects Associates
Developer:
Shūwa Aoyama Residence Condominium Reconstruction Association (Nomura Real Estate / Asahi Kasei Realty & Residence Corp.
Unofficial sources:
https://skyskysky.net/construction/202529.html
Official Building Website URL:
https://www.proud-web.jp/mansion/a116320/
Current Building Status:
Built
10. Park Homes Minami-Ikebukuro (59.99 m, 17 fl)
https://skyscraperpage.com/cities/?buildingID=162029

source:
rehouse.co.jp
Completed last month.
Unofficial sources:
https://skyskysky.net/construction/202599-14.html
Current Building Status:
Built
11. BIZCORE Nishi-Shinbashi (59.9 m, 13 fl)
https://skyscraperpage.com/cities/?buildingID=160024

source:
nskre.co.jp and
skyskysky.net
Completed 2 months ago.
Official sources:
https://www.nskre.co.jp/company/news/2025/20250310.html
Unofficial sources:
https://skyskysky.net/construction/202599-43.html
Interesting Facts/Records:
Total Floor Area: 4,387 sqm.
Current Building Status:
Built
I suspect other shorter highrises have already been completed as well, but it's more difficult to track the construction status of those buildings. If not sooner, I'll check them one by one toward the end of the year to see which ones were completed. Worst-case scenario, we’ll have to wait for Google Maps/Earth to update their imagery