unknown title (please report on Discord)

A Bandori doujin about a girl (Kokoro) who can no longer see smiles.

Note: The 2020 April Fools Special has been moved to here: <https://mangadex.org/title/46769/april-fool-s-collection-2020>

[ Artist’s Pixiv](https://www.pixiv.net/member.php?id=5073572)
[ Artist’s Twitter](https://twitter.com/kanohara8)
Information on the raw book can be found here: <https://www.melonbooks.co.jp/detail/detail.php?product_id=356135>