# Happy Birthday to Us: Masumi Asano & Yui Horie's Big Thank-You Festival 2026
_浅野真澄･堀江由衣のHappy Birthday わたしたち Happy大感謝祭2026_

- **When:** Sat, Dec 5, 2026 14:00 (JST)
- **Where:** Science Hall, Science Museum, Chiyoda — 2-1 Kitanomaru Park, Chiyoda-ku, Tokyo
- **Map:** https://www.google.com/maps/search/?api=1&query=35.691772,139.753021
- **Price:** ¥6,600
- **Category:** Shows & Entertainment
- **Official site:** https://www.onsen.ag/program/happybirthday
- **On Tokyo Events:** https://eventstokyo.com/en/events/happy-birthday-happy2026

![](https://d3bzklg4lms4gh.cloudfront.net/program_info/twitter_share_image/default/production/c9/27/8945b42ac3e845774b5c8990c2afada656c4/image?v=1790243925)

A live fan event for the web radio show "Happy Birthday Watashitachi", hosted by voice actresses Masumi Asano and Yui Horie, held at the Science Hall of the Science Museum (Kagaku Gijutsukan). It runs as two separate shows on the same day, with Rie Kugimiya appearing as a guest in the first show. All seats are reserved.

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Source: Tokyo Events — https://eventstokyo.com/en/events/happy-birthday-happy2026