Yu Otosaka (Charlotte)

I watched this anime recently suggested me the anime ,It's a funny yet sad anime ,I recommend watching it 13 Episodes and 1 OVA 

Yū Otosaka (乙坂 有宇, Otosaka Yū) is the male protagonist of the story, and a first-year transfer student at Hoshinoumi Academy. He has the ability to temporarily possess a person for about 5 seconds. However, it is later revealed that his actual ability is stealing the abilities of an ability-user he possesses. Towards the end of the series, he becomes widely known (and feared) as the One-Eyed Grim Reaper. He is Ayumi Otosaka'solder brother and Shunsuke Otosaka's younger brother.