Yaoi: Love Triangle Manga

Yoshi, a student in an all-boys high school find his only solace in Urakawa-sensei, the school's nurse. Urakawa is a fresh breath of air with his gentle demeanor and attractive appearance. But there's more than meets the eye as sensei seems to be close to another student named Sugao. Yoshi is in for a big shock as he learns things he wished he never did.

"Back then, I didn't even consider thinking that we would fall apart some day."
Kanade, Yuuji, and Souma are childhood friends. Yuuji can be rude at times, but has a strong sense of responsibility. Souma is the popular kid in class. Kanade is shy and always looks up to the other two. The three of them had promised to always be best friends, but things began to change when Souma started dating a girl in high school.
Emotions waver and hearts are broken, as a love triangle between three childhood friends unfolds.

Ten years have passed since my brother's dead body was discovered in the bottom of a cliff. Rumour said, he was escaping his engagement and supposed to meet his lover there... But that person never came.
After searching for years, I've finally reunited with him again.
"Did you really betray my brother...?"
He trembles like a child. But he is still as beautiful as the first time he smiled at me. Kai, the owner of my brother's heart, and the man who had stolen my first love... Who does your heart belong to?

"Tempest of Cage" is your ideal Taisho-era BL that involves tragedy, family drama, and a love triangle. Follow Yoshihisa and Kai on the journey to make peace with their past...

The social studies teacher, Izumo has an unrequited feeling towards the handsome physic teacher, Muroto. Izumo had decided to bury his feeling forever, but Muroto suddenly asked Izumo to be his girlfriend?! At the same time, Izumo realized that Tomogashima, a male student he's closed with, also has a special feeling towards Muroto. "Where That Love Went" is a bittersweet love triangle with a lighthouse–where the legend of eternal love exists–as the main stage.

Miyatake and Saijo, the tall freshmen from basketball club who always compete against each other on everything, have been hanging out together since junior high. After entering high school, they became closer to Komori, the tiny and gentle guy who immediately charmed both of them. Miyatake assumed Komori is interested more in Saijo who is a better basketball player, so he started avoiding his crush. Little he knows Komori might care about him more than he thought…
Meanwhile, Nakatani, the giant ace from basketball club, started approaching Saijo aggressively.

This volume includes a one-shot
"My Neighbor is Handsome and I'm Ugly"
Manabu is just an ordinary man with an average face who lives in a run-down apartment. One day Ikeda, a handsome and gentle new neighbor invited Manabu to have dinner in his room. When Manabu is busy playing with Ikeda's odd dog , Ikeda suddenly hugged him..?!

"My feeling for Daichi should not be known... forever."
Mihiro has been secretly liking his best friend, Daichi, a clumsy high-schooler who has bad luck with women. When Mihiro got confused with his relationship with Daichi, his upperclassman started to approach him. But why does Daichi act like he's jealous? Even though he supposed to be head over heels towards his girl crush...