Absolute Duo(4307)

Other Title(s)アブソリュート・デュオ
Genre(s)Action, Fantasy, Romance, School, Harem, Supernatural
SynopsisAfter losing a loved one, Tooru Kokonoe enrolls at Kouryou Academy so as to gain a <>, a weapon that is his soul manifestation, for the sake of revenge.
He was expecting a weapon... What he got was a shield...
How is he to seek revenge with something that isn't even a weapon?!

(Source: MU)