I Got Married to the Girl I Hate Most in Class (Light Novel) Vol. 3

TRAPPED IN (TWO?) LOVE TRIANGLES!
Himari’s got the hots for Saito, and a certain incident leaves Akane down in the dumps over her newfound married life. Saito’s heart is also left shaken, and Saito offers Akane a peace offering in the form of a date. Akane and Saito head out on the town together for the first time as a couple and have a blast!
Just as Akane starts to feel as if her and Saito’s hearts are starting to burn as one, Saito douses the flames when she notices him sneaking around at his cousin Shisei’s place. Is Akane’s honeymoon bliss about to come to a screeching halt already…?!
Series Overview: Archenemies Hojou Saito and Sakuramori Akane are notorious across their high school for their bitter rivalry. Every day is a new battleground, filled with constant bickering and fiery clashes. But everything changes when Saito’s domineering grandfather delivers a shocking ultimatum: marry his rival, or lose the family business to the dog! Reluctantly, Saito agrees, and to his surprise—so does Akane. Now, the two must navigate life as an unlikely couple, sharing a house, meals, and even a bed… without tearing each other apart! Can they keep their embarrassing marriage a secret from their classmates? And what could have possibly motivated Akane to agree to this arrangement in the first place?