Seiseidoudou Futamata suru Hanashi

A story from the creator of Aho Girl, and Mangaka-san to Assistant-san. High school boy Naoya gets a confession from Momi, a cute and friendly girl. However, Naoya already has a girlfriend, Seki… but Momi is too good a catch to let go. Momi and Nagoya's goal becomes clear: convince Seki to accept being an item with the two of them. Will she budge?