I Am the Eldest Brother and I Have Become Takashi Mihashi

A boy who loves I Am Big Brother time-traveled into I Am Big Brother and became a boy named Xianyi Kawasaki. He also obtained the most powerful delinquent system. The first task of the system is to choose a cool and attractive hairstyle. The second task is to become partners with Mihashi and Ito... The heroine is Akemi. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.