山口くんはワルくない [Yamaguchi-kun wa Warukunai] Series by Yuu Saiki

Shy Satsuki Shinohara's plan for a big high school debut are almost ruined by a pervert on the train, but she's saved by none other than the "gangster" student in her class, Yamaguchi-kun. He's already got a bad rap with the other students, and though Satsuki tries to approach him, he seems to always weasel out of her grasp. But she's not one to let a challenge daunt her, and she's out to prove that Yamaguchi-kun is so much more than he's cracked up to be.

“When I see you being close with Ishizaki-kun, it drives me nuts!” Seeing Yamaguchi-kun jealous, Satsuki found him so cute. Now that Satsuki has feelings for Yamaguchi-kun, her heart won’t stop pounding on the field trip, at Yamaguchi-kun's house, and during summer vacation! It’s a high school love story about a tough-looking boy and a serious girl☆

“Should we get away from them?” Satsuki came to Yamaguchi-kun’s hometown with her friends. They all went to the summer festival, but Satsuki and Yamaguchi-kun got away from everyone to be just the two of them. Her heart won’t stop thumping…! It’s a high school love story about a tough-looking boy with Kansai dialect and a serious girl☆

"If I do well on Sports Day, let me kiss you." Sports Day for their first kiss is starting?! Yamaguchi-kun volunteered to run the relay so that he can improve his reputation and be lovey-dovey with Satsuki at school! To root for Yamaguchi-kun, Satsuki wants to join the cheerleaders, and...?!

Since Yamaguchi-kun was outstanding at Sports Day, he started getting along with his classmates. Satsuki has mixed feelings about it even though she's supposed to be happy! Also, Yamaguchi-kun seems to be more and more affectionate after their first kiss! It's a high school love story about a tough-looking boy with Kansai dialect and a serious girl☆

"Will you go on a date with me on October 24th?" Satsuki got to spend her first birthday with her love, Yamaguchi-kun, after they started dating. Yamaguchi-kun took her to a place she had always wanted to go. How did he know?!!

Satsuki came to the pool where Yamaguchi-kun works. She actually wants to flirt more with Yamaguchi-kun but doesn't know what to do...! Also, preparations for the school festival have begun. Satsuki wants to go around with Yamaguchi-kun... How is it going to go?!

A battle for love, Yamaguchi-kun vs. Ishizaki-kun?! Yamaguchi-kun caught sight of Satsuki while Ishizaki-kun held her tightly during the school festival. Fueled by jealousy, Yamaguchi-kun reacted in an unexpected way…?! Also, Satsuki experiences her first Christmas with Yamaguchi-kun as her boyfriend! They will have a Christmas Eve date at a memorable place for them…