Sano Shinichiro is the eldest brother of 3 siblings, Izana, Mikey, and Emma. He also has good friends, Wakasa, Takeomi, and Benkei. He is a gentle person even though he was once the leader of a gang, he is a good listener, considerate, and loves his younger siblings very much, and he is a very reliable person, but he's weak against girls/women. And sometimes he also has an annoying side.