Handa-Kun is a spin-off/prequel manga to Barakamon, receiving an anime adaptation in 2016.
The story is set 6 years prior to the events of Barakamon, focusing on Sei's life as a high school student. While his classmates admire him as a calligraphy genius, he's unfortunately under the impression that they all hate him.
Sei is dressed as an angel.
Episode 8 Edit
Sei takes a bath.