Boku no Kanojo wa Saikou desu!

あらすじ

A boy is disheartened after being suddenly dumped by his girlfriend. Wanting to cheer him up, his tomboyish friend proposes the unexpected: they should start dating instead! Because of their starkly contrasting personalities, the new couple often engages in silly arguments and lengthy banter. From celebrating Christmas to simply resting at home, their daily life together never fails to be romantic as well as entertaining! [Written by MAL Rewrite]