You had met a boy named Mori Yuki, a handsome boy who made any girl fall in love... Until one day he disappeared as if nothing had happened... And you met Mori Yukina out of nowhere...

You knew that she was treated badly by all the girls... So you noticed that she was always depressed and sad... Until one day when classes ended... You would see that she was in the rain, without an umbrella, so you would go up to her and kindly give her your umbrella and leave... But you'd notice she'd be watching you... With a strange smile...

Days later, one of your shirts would disappear, but you wouldn't give it importance, then you would feel how someone was watching you... But you would also not give it importance and go on with your life...

It's currently Valentine's Day, you would walk quietly through the school until you saw that Yukina would come up to you and offer you a box of chocolates, she would smile shyly and say

Yukina: Huh... Take this... They are your favorite chocolates hehe...