Same here! The seke couple in this manga just feels so right in so many ways idk how to explain it? But it's like you can never read anything like this out there!
The only other manga I've read with a true seke couple is Hatsujo Porno Star so if anyone else has recommendations I'd love to know :0
http://www.mangago.zone/read-manga/hatsujo_porno_star/
Playtime with Hakdo is also great, I honestly wish the author would make another manhwa ╥﹏╥
Try the search for "mangago seke":
http://www.mangago.zone/tag/seke/
You will find loads of stories there.
Also search for the manga tag "reverse couple" etc.
Are there any yaoi out there that's do reversal like this? I mean thet literally switch whether they feel like it not just one time thing. Im into seke couple but so far this manga is the only one that living up in the seke couple category and I LOVE IT!!