MyGO single pusher, but joined Mujica

This book is also known as: "I became the shape of Toyokawa Shoko, so that the members of Group C could hear my inner voice"
Tian Nalin accidentally traveled to the world of Bandoli in the spring when the story begins. As a fun-loving person, he wanted to watch and taste the delicious love-hate entanglement between the girls.
But Tian Nalin didn't know that his "thought waves" could be received by the girls in a certain band. Not only did it interfere with the original plot development, it also dragged him into the gravity vortex and was eventually captured by the Galaxy Battleship.
...
"Toyokawa Shoko! One of my favorite things is to say "No" to self-righteous people like you!
Not long after he uttered this harsh remark, Tian Nalin felt a sound of breaking air behind him, and then his head was hit hard by a boomerang, making a crisp sound.
——BanG!
...