OVA

'''Valentine's Day, Followed By Hot Springs! (Please Don't Expect Much)' (バレンタイン、そして温泉！（あんまり期待しないでください)) Barentain, Soshite Onsen! (Anmari Kitai Shinaide Kudasai)'') is a Original Video Animation of the anime. It was released on the seventh Blu-ray/DVD compilation volume on September 20, 2017.

Summary
On Valentine's Day, Tohru attempts to give Kobayashi some chocolates containing a love potion, but she quickly sees through her plan. However, Kobayashi ends up eating some of it after mistaking it for chocolate Kanna received, although the love potion gets canceled out by some alcohol that was included in the chocolate. Later, Makoto invites everyone on a trip to a hot spring inn, where Tohru gives Kobayashi some regular chocolates.

Characters

 * Kobayashi
 * Tohru
 * Kanna Kamui
 * Quetzalcoatl
 * Magatsuchi Shouta
 * Riko Saikawa
 * Elma
 * Makoto Takiya
 * Fafnir

Adapted Chapters

 * Chapter 10
 * Chapter 33