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Artist's commentary
Kawashima Momo Birthday 2020
It's an official costume and it's a summer day, so there should be no problem having it as the commemorative costume.
Source: https://www.pixiv.net/artworks/81300159
Happy Birthday. I wondered if this was a birthday commemorative picture, but it should be since it's an official costume and summer days.
#KawashimaMomoBirthday2020
Source: https://twitter.com/WintersGreen/status/1257324369337937921