A Touhou doujin with three stories by three circles, thus the inconvinient name. As the title suggests, they’re all about ball-tails, and all with a Youmu x Yuyuko pairing.

Contains multiple stories from different artists. • Daitoshokan ni Youkoso! / Welcome to the Giant Library! (大図書館にようこそ!) by Johnny:Later reprinted in Touhou Project no Hon Soushuuhen

Pairing: Kanako x Sanae x Suwako

Murakami Naoki is the most intelligent student at his high school, but he can't stop obsessing over a girl named Mizuno Haruka. He finally asks her out, and to his surprise, she accepts. After several months of...

This is the story of a boy who one day walks into some strange wood and is saved by a nymphomaniac godess who can not only take over his body (turning it into hers in the process) but can also transform him...