Welcome To The Ballroom, tome 08
Tomo Takeuchi2016

Fujita has drifted through middle school aimlessly, unable to find friends or anything that can hold his attention. Then, one day, he's attacked by a gang and saved by a mysterious man. But this isn't a karate master. Fujita's Mr. Miyagi is a ballroom dance instructor! Reluctantly, Fujita takes a few beginner's classes, only to find his inspiration... an entrancing, teenage dance prodigy named Shizuku. It's Fujita's first step into the high-octane world of competitive dance!

Titre original : Ballroom e yōkoso, book 8 (2016)