He's Mine!

This is a battle I absolutely cannot lose!! Akoko, who's straightforward and a bit of a goofball, and Mitsuki, who's shrewd and calculating. The two childhood friends are completely different types of people, but they are most comfortable being together and somehow get along well. But the school's most popular guy, Naoki, and Akoko became close! What’ll happen next?! The bell for the girls' battle... is ringing now! (Source: MANGA MILLION) *Note: Includes one extra chapter.*