Makabe Masamune was a chubby little kid but after years of training, he manages to lose weight and becomes a hot guy. This was all so he could get revenge on a girl who called him Pig's Foot as a child by making her fall in love with him and dumping her in return.
Also, I don't think unnaturally staring at
أيضًا، لا أعتقد أنّ التحديق بشكلٍ غير طبيعي
Aussi, tu fixes souvent
le haut des bras des plus jeunes,
Trovo inoltre che fissare ossessivamente 
le braccia flaccide di altri studenti
Além do mais, eu não 
acho que ficar observando
Ещё я считаю, что глазеть на жир 
на руках младшеклассниц — плохое хобби.