Zenbu Kimi no Sei - Extras / After Story - Vol. 1 Ch. 29 - A Gender-Bending Couple Just Eating Ramen

[MangaDex]

 

[elengee]

I am hijacking this wholesome chapter to reveal what the author said on Fanbox about how sex works for them

Spoiler

As you could recall, prior to the last gods summit, having sex would permanently lock someone to their current sex. But now this effect is only temporary, so they would not get stuck inside each other. This rule applies to oral sex and fingering/handjob as well. It is not clear how pregnancy works though since the two practice safe sex diligently

Spoiler

The author drew several erotic stories about them. I am honestly amazed by how creative the sex gets, since they would switch sex every three pannels and had to adapt to the situation. Ryou bottoms 70% of the time regardless of sex combination btw he is too awkward to take the lead. The author actually split F/F, F/M, M/F, M/M actions quite evenly so you get everything in each story