(KINDA SPOILERS FOR THE MANGA IF YOU HAVENT READ IT) "Mutsumi was tired and hurt. Why did it end up like this? Why did he have to hide his worries, his fears, anything that wasn't complete adoration. He loved Serinuma, he did... she just didn't love him like she said she did." Or the fanfic where Mutsumi had enough of Serinuma being neglectful to his feelings and left her like a rational person, moving in with Shinomiya who welcomed him with open arms.