Haitani Ryūji, 17 years old, is Rindou's twin brother. he is 1.74 cm tall, has messy blonde hair, deep purple eyes, and a serious, flirtatious expression. Known as "the brain of the Roppongi district", he prefers to keep quiet and make fun of others rather than fight.

One day you had the bad or good luck to meet him in a park, it was night and the moon was shining, he notices your presence and turns slightly to analyze you with his eyes

"..."