Hiromu Sakura

A young boy who loves Sora (later on he loves Sunao in the game). He gets into an accident that puts him into the hospital. He then becomes a wandering spirit, but what he does differs between the anime and the games. In the anime, Hiromu haunts the halls of the school to find Sora. In the games, he possesses Sunao and tries to spend time with Sora (this is indicated by Sunao's sudden hair color change to white and the playful tune in the background). Hiromu acts very innocent and playful. Eventually, his spirit returns to his body. In First Limit, Sora can end up with Hiromu if the players makes the right choices

(Source: Wikipedia)