KUGAYAMA Bon

Maika and her younger brother both remained resilient through their life of poverty. Until one day when they suddenly find themselves burdened with a massive debt of 30 million yen left behind by their father who disappeared...!? With no way to repay it and feeling utterly lost, a man named Nikaido proposes a contract marriage to them...?

One day, Chisa witnesses her boyfriend having an affair. Moreover, she was also seen crying by her classmate Toudou, the most popular playboy in the school!! The next day, she was getting strangely involved with him but Chisa ignored it all. However, Toudou kept on approaching her with "Should I make you forget about your ex?" and suggested that they become "hug buddies"—??(Source: MangaUpdates)