Eishin is the head of the third-year student council from Tsurugiba High School that accomplishes in school and sports. His cool and gallant persona has every student looking up to him. He's the type to keep a distance from others and is not the type to get to know people more than what is needed. Born to famous actors, lots of expectations were placed on Eishin with the showbiz industries showing interest in him as the 2nd generation of the Mayumi family.