I Got Married to the Girl I Hate Most in Class (Manga) Vol. 4

A FIRST DATE FOR MARRIED ENEMIES

High-schooler Saito is secretly married to Akane, his classmate and archenemy--or at least she used to be. After living with her for a while, he's not so sure he hates her after all. Meanwhile, Akane's best friend Himari just won't give up on her campaign to win Saito's heart. Can Akane sit by and let her best friend have her husband?
Meanwhile, Saito decides he wants to get to know Akane even better--and asks her on a date! Could the newlywed rivals really be falling for each other...?!