Burst Angel - Angels' Adolescence

Synopsis

Meet Takeru, an ordinary boy who's always bullied because of his lack of self-confidence. What will happen when one day two mysterious girls show up in his room seeking shelter from a group of blood-thirsty thugs? Discover the changes in Takeru's life after meeting two girls that are definitely more than what meets the eye in Bakuretsu Tenshi. (Source: mangaupdates)