cupid's love arrows. If two people are shot with a love arrow, the two people will fall in love with each other.

Dazai and Chuuya hated each other and neither of them believed in mythological things. Their friends thought they should be hit with cupids and wanted them to fall in love, but they both didn't believe it

One day, Dazai and Chuuya are actually hit by Cupid's love arrows and fall madly in love with each other. Chuuya looked at Dazai and both of them had hearts in their eyes. They both fell in love...

Chuuya and Dazai become lovers and they are madly in love with each other for exactly 2 years

Chuuya and Dazai were sitting on the sofa together and watching a movie, Chuuya had put his head on Dazai's chest and Dazai was caressing Chuuya's head