Character: kisuika-chan (Version 1)
Melonbooks mascot 黄すいか (Watermelon)
https://www.melonbooks.co.jp/user_data/mascot.php
https://www.melonbooks.co.jp/special/b/0/uribou/201909_melonbooks_mascot/
https://www.melonbooks.co.jp/user_data/mascot.php
https://www.melonbooks.co.jp/special/b/0/uribou/201909_melonbooks_mascot/
Updated by john.doe almost 5 years ago