Possessive / Obsessive Seme

6 ch
2 couples, interconnected

[Ch. 1-3,6] hs student x school nurse
Yosemine Takumi is a difficult student to handle. The new Infirmary Nurse, Tsutsui, is determined to change all that. But Yosemine has fallen head-over-heels in love with Tsutsui-sensei and set the goal on owning the nurse for himself!
[Ch. 4-6] school director x secretary

Ongoing manga
uni student x company director
re-encounter

Ayase Yukiya is a university student whose cousin Tetsuo Ishii betrays him and sells him in an auction to settle his heavy debts. Ayase is bought by Somuku Kanou for 1.2 billion yen. The reason behind Kanou doing this is Kanou remembers Ayase from four years ago, when Ayase, a stranger, helped him. Now Kanou wants to keep Ayase close to him in order to protect him, and uses the 1.2 billion debt to force Ayase to live with him.

6 ch
hs student x boyfriend's older brother
omegaverse

Haru (omega) is in relationship with the little bro Eiji Ichijou (alpha) who is also his childhood friend. But Eiji who is from elite family already had his fiancé and Haru always came in second? Renji Ichijou (alpha), the older bro and Haru's first love, appeared in front of him.

Ongoing manga
uni student x yokai

Ever since his mother passed away, Hinata has been taken care of by Midori, who is as strict as he is caring. Midori’s smart, and tall, and handsome. He also doesn’t have a shadow or a reflection in the mirror. Wait… What? Hinata’s a scaredy-cat, and thinks Midori might be a ghost. But he is in fact a…?

10 ch
hs student x hs student

Yuito didn't have a good first impression of the new transfer student, Tagasaki Mitsu, who bit him on their first encounter. There are a lot of rumors about Mitsu's violent ways, will Yuito find out whether they're true or not?

6 ch
model x cousin

I am the amazing, extremely popular model of Karisuma Models, KEI (Toudou Kei). I would like my roommate, and ineloquent cousin, Nanami, to be my lover! He walks around, pretending he’s really badass, but he’s a worrier at heart, and whenever I see him like that, or showing this awkward kindness that he has, I just love him, love him, love him

6 ch
actor x uni student
re-encounter

College student Haneji Kaoru is surprised when popular actor Aragaki Jin appears in his workplace. They were high school friends, but unable to cope with his deepening feelings for the playboy, Haneji cut all ties after graduation. But now that Aragaki has found him, he has no intention of letting Haneji go.

8 ch
actor x stage production worker

The werecat Shingo is able to change into a black cat, and as long as someone has the looks and body that he likes, he'll sleep with just about anyone. Falling for Shingo because he was overwhelmed by his strong masculine aura is the No. 1 popular actor, Kakami. Amongst all the playful teasing and messing around between the two, Kakami suddenly shows his beastly nature...?!

Link to whole Kuroneko series: http://www.mangago.me/home/mangalist/599419/

Ongoing manga
multiple couples, interconnected
Main Story: Onodera and Takano
boss x subordinate, re-encounter

Onodera Ritsu has just transferred to Marukawa Shoten, shoujo manga division. He crosses path with Takano Masamune, the editor-in-chief and the two seem get off on the wrong foot right from the very start when Takano unexpectedly kisses him. However, Takano is actually Onodera's high school love which he dumped because he thought Takano was just playing him

Ongoing manga
multiple couple, interconnected
Main story: Misaki and Usagi
uni student x novelist

Takahashi Misaki is suddenly having some unexpected and odd problems. What started as a need for some college entrance exam tutoring has somehow led him to being romanced by a suave older man who also happens to be his big brother's best friend, Usami Akihiko