ITOH Sei

From Izumo no Ryuu: A boy, with a virus which unlocks the primal beast, desires forgotten memories. After waking up, Mikado Shuhei found himself locked in a cage in a mysterious medical facility. Without his memories Shuhei now has to fight against beasts who can speak like humans. A woman calling herself Akashi Maya then rescued him from this predicament.

From CMX: Kasche may have a talent for controlling beasts, but she's got a lot to learn about self-control before she can become a full-fledged summoner. When disaster strikes, her principal chooses her to avert it. Joined by an unusual crew of allies both human and not, Kasche must recapture the relic from an evil summoner before she can use it to unlock the ancient…