Pool: (SC2019 Summer) [Gogatsu Souzaiten (Gogatsu Unagi)] ZENRANOHON4
https://www.melonbooks.co.jp/detail/detail.php?product_id=517777
https://ec.toranoana.jp/tora_r/ec/item/040030751178/
https://www.pixiv.net/en/artworks/75229625
https://ec.toranoana.jp/tora_r/ec/item/040030751178/
https://www.pixiv.net/en/artworks/75229625