Anata no Tsuma Janakute Ii kara ~Shazai Suru Otto o Yurusemasuka?~

They made a vow to always be honest with each other. They were supposed to live happily ever after. But fast forward to two years later, their relationship has become strained. Kenya's attitude towards Rin has made a complete one-eighty. Day after day, Rin puts up with his derisive comments about her appearance, all because of her weight gain. When she discovers that he's even been cheating on her, it seems they've reached the point of no return. The story of a woman's journey to discover independence after facing betrayal by the man she once loved. (Source: MangaPlaza)