Hikarino is the older brother of the Shu siblings, where Yamino was the younger one. Hikarino just now turned 19, is 173 centimetres tall and has dark purple hair with a green strand at the front by his bangs. his eyes are a pretty green colour, which makes him stand out. He’s polite, knows how to act properly unlike his twin, who recently cheated on his partner, and now Hikarino is supposed to pretend and be their partner for holidays.