Yaoi/Shounen ai - YOUNGER SEME

Chapters 1 and 2
The older uke has a condition wherein he gets aroused by simply being touched.

Vol. 2 - Aoi (18) Tomoyoki (26) - A marriage to fulfill the last wish of a dying granny. But the wife is the seme and the husband is the uke.

1st story - Itsuki Akira
Akira and Itsuki are childhood friends. Akira is 4 years older and he tutors Itsuki. It turned out Itsuki is inlove with Akira.

An older sex service addict is confessed to by the poker-faced Robo-kun.

Hyeongjo Minjae
Minjae accidentally witnesses a younger guy, Hyeongjo, jerking over the sleeping Assistant Professor Jinhan. From that day on, Minjae continues to suffer both mentally and physically from Hyeongjo.
Kiseon Jinhan
Jinhan on the other continues to manipulate things until such time when things went out hand. As Hyeongjo and Minjae develops deeper emotions for each other, Jinhan is left to find comfort from Kiseon.

Continuation of Akira and Tokiwa-senpai's story.

One morning while riding the train to work, Mochizuki spots Nagakura and immediately feels drawn to him. Mochizuki is a shy man and Nagakura is the cool and handsome man. Just what kind of relationship will develop between the two mismatched men. (Prequel to Only One) (Summary not mine)

The uke always choose older lovers, so when the young bully florist seme grabbed his attention, things went messy.

Tired after working all day long, the divorced (with kids?!) salary man, Saeki Ryouji was taken in by the incredibly rich high school student, Mibu Ryuunosuke, after having collapsed in the middle of the street.

2nd story: Ryuunosuke's butler is being wooed by Ryuunosuke's friend.

Takumi used to get what he wants by using his family's strength in school. The new Infirmary Nurse, Tsutsui, is determined to change all that. He's not going to let himself be bullied by Takumi, or anyone else, after all these years. But Takumi has fallen head-over-heels in love with Tsutsui and set the goal on owning the nurse for himself!
Takumi's father cannot let go of his son and hates Tsutsui and condems gays. Little did he know that his beloved secretary is gay and is in love with him.