sleepingbaku's manga / #Regret(9)

Despite his feelings for him, Natsuki rejected his friend's, Haruomi, confession. Ten years leter, they've meet again at a friend's wedding. After the party, Haruomi and their mutual friend Kariya take Natsuki to a room where, Natsuki is surprised when Haruomi starts giving Kariya a blowjob. When Kariya has to leave early, Haruomi reveals that after Natsuki rejected him Haruomi has been sleeping around with a bunch of men.

A painful love triangle between three friends including sabotage and regret

In high school, Ichika confessed to his best friend Shuu, but Shuu mistook it as a joke. 10 years later, they are still together and whenever Shuu has problems with women, he complains to Ichika, but Ichika has never talked to Shuu about being in a relationship. So, when Shuu sees Ichika entering a love hotel with another man, Shuu confronts him, forcing his idea of normalcy on to Ichika, and Ichika is forced to confess again. But, this time, Ichika's confession has Shuu rethinking his feelings.

Hazuki is a socially awkward and earnest member of the product planning department, who hates seeing couples in public and his coworker Watanabe. Watanabe is a popular member of the same department that Hazuki thinks he is superficial. But, Hazuki's feelings change when Watanabe invites Hazuki to eat with him at his house on the weekend. Their new friendship develops into a relationship, but things go wrong when Hazuki discovers Watanabe was seeing him as a replacement for someone from his past.

Ito and Nishi meet when they run into each other while individually playing the White Line Game on the way home from school and they must find a way around the other. The two continue this pattern everyday, until Ito starts avoiding Nishi after Itou suddenly kissed him, but not wanting to be apart Nishi finds him and the two begin the game again as a pair. But, as they get older, Itou's over-seriousness and Nishi's carefree nature begin to clash and their line starts to divide.

High schoolers Itsuki and Airi are a pair of lovey-dovey boyfriends and Airi's older brother Yuuichi, who Airi always bickers with, is their homeroom teacher. After, Yuuichi walks in on Itsuki and Airi having sex, Itsuki begins to realize the hidden feeling Airi has for his older brother.

Since middle school, all the girls Tachibana has dated were only using him to get to his friend, campus idol Adachi. When Adachi confesses to Tachibana and asks Tachibana to hold him, Tachibana sleeps with him as a form of revenge to all the girls who dumped him. The next morning, Tachibana wants to apologize, but Adachi suddenly starts to avoid him.

Shoukichi is a quick to violence hair stylist who is having trouble keeping customers due to his overly serious and unfriendly nature. On the other hand, Fukusuke is the new hire that formerly worked at a prestigious salon and prioritizes socializing over skill. The two can't get along and Fukusuke intentionally makes Shoukichi mad for his own amusement. The two become closer after they start staying late, at the orders of manager Mikado, to do skill checks.

After loosing control and forcing himself on the tutor he had a crush on in junior high, eccentric and excessive Aikou decides he needs to learn about love from scratch. So, in high school, he joins a kiss club. While standing in a park with free kisses sign, Aikou is kissed by Eisuke, a student from his school. Afterward, Eisuke begins trying to get more kisses from Aikou.