unknown title (please report on Discord)

**Links:**
- [Author's Pixiv](http://www.pixiv.net/member.php?id=2780996)
- [Author's Twitter 1](https://twitter.com/igaratara)
- [Author's Twitter 2](https://twitter.com/maxmurata)
- [The Doujinshi & Manga Lexicon](https://www.doujinshi.org/book/1242615/)