First Love Academy ( Len vs Killua love story)

Mana was just an ordinary high school girl until she went to First Love Academy. She meets 2 very hot (and I really mean hot.) boys: Len and Killua. Both have a crush on her, but they don't know who will she fall for...until Philip and Nathaniel make teams for them ( Philip:Len,Nathaniel::Killua). The new girl, the shy boy and the assassin, how will their love story end: LenxMana or KilluaxMana?