**誕生会** – *tanjō-kai*. It is a **celebration of one’s birth** and it may involve a [fan meet](https://seiyuu.yakuaru.com/%E3%83%95%E3%82%A1%E3%83%B3%E3%83%9F%E3%83%BC%E3%83%86%E3%82%A3%E3%83%B3%E3%82%B0%20-%20%E3%83%95%E3%82%A1%E3%83%B3%E3%83%9F) where the birthday celebrant gets to spend time with their fans. Due to scheduling conflicts, such events don’t always happen on their actual birthday but they are unique experiences. These occasions also encourage fans to put up shrines and post them on social media in hopes that it gets seen there. 

You might also see **seitan-kai** (生誕会), which is a more respectful term normally used to refer to someone great. Going into specific nuances, *tanjō* can be used for anything other than people such as animals, items, events, and groups. *Seitan* can only be used for people. Both can be used interchangeably unless the person has passed away, where *seitan* becomes more appropriate.