sOMEONE !!

Sorry meant to upvote

I think haru wo daite is to some point..

Neko X Neko

http://www.mangago.zone/read-manga/playtime_with_hakdo/
This is my favorite!!

http://www.mangago.zone/read-manga/satou_kun_ni_wa_kanawanai_sachimo/
This is a classic seke!!!

http://www.mangago.zone/read-manga/love_replica/
The two of them are muscular and sooo precious!

Sadahiro Mika
I think either all or most of this author's manga are seke.
I love 'Buddy System' though.