
I started to think that "seke" is like Narnia.... a mythical existence that lives in our fantisies but it got to the point we don't know if it really existed in the first place or not.
Actually,I think I've never read a manga with a seke couple before... Σ(  ̄□ ̄||) Recommendations people? I'm looking for Narnia

bb i just searched to google-chan and istg mangago has everything
http://www.mangago.zone/tag/seke/

I supply you all with this. Haven’t seen any mid-sex switches but this has just about everything:
http://www.mangago.zone/home/mangalist/33677/
Shinjuku Lucky Hole is the only one I remember having a cool switch couple cuz it depends on the mood and partner (it’s buncha short stories scattered about time)
Nope there's no seke by this mangaka, don't get your hopes up.