By Kou Fumizuki.

Tina invites everyone to Kyushu to visit the hot springs there. Much to Kaoru's dismay men and women are allowed to bathe together so he must join his lady friends. When the group arrives at Hakata, Tina's home prefecture, she insists on getting some alone time with Kaoru, and then convinces him to act like her boyfriend!

Recommended age 16+. English manga graphic novel.