
If anything, the demon king should've been the one dying so that the hero would have to step up and take care of demon kingdom whilst looking for a way to revive his wife. It'd let him learn how important the demon king was to him and it'd show us that the hero cared about more than just burying his dildo in the demon's honeypot.

The story never started off with an established relationship with consensually, so it isn’t cheating. There was nothing promised or committed, no communication of such between both, and both were forced. But is it icky?
Absolutely. I was mad at the seme for going out with that woman and staring at her boobs. Ugh, I wish the monologue wasn’t so vague. Did he actually sleep with that lady or what? I’m dying to know.
I’m also mad about how the Uke is the one putting effort despite having no choice. Now it would be different if both of them didn’t put in efforts, but just one of them doing it more made me sad, and the seme is receiving it.

Exactly lol, it would've been fun to see the hero vying for his wife who totally forgot him. Like imagine the hero having to describe exactly how their relationship dynamic was?
Hero: We used to be so happy together, I hope you recover your memory.
Demon king: Really, what did a day in our life look like?
Hero: Well, you used to wake up early, cook breakfast, make bentos for me, wake me up, have sex. I'd leave for uni while you cleaned, did the laundry, ate bento scraps, bought grocery, prepared lunch, got my bath ready, I'd come back home and we'd make love. Then you'd do more chores and we'd make love until we fell asleep. *Sigh* we were so happy.
Demon king: ...
When it's literally playboy cheating seme x naive virgin uke arranged marriage of convenience trope.
I know some of y'all will argue that "it's not cheating" cuz the seme had no choice. The demon king didn't either?!? Like his options were death or this marriage. The seme proposed the marriage so he should've atleast mentioned there would be no feelings involved?
Also hate how seme reduced marriage to sexual needs only. Like his belief that a marriage will work only if they can bone was sickening. I know he wasn't gay but your marriage was legal boy, "I'm a man so I got needs" the demon king's a man too?!
I know the appeal of simple domestic housewife life romance mangas but this one does SUCH AN AWFUL JOB, it gave me PTSD with how the demon king always reduced a wife's job to household chores, cooking and bed warmer. He was the one giving his 100% and still had to be the virgin coming onto his playboy husband, I cringed so hard.
The stabbing and curse felt so unnecessary though like the author was trying to avoid any character development on hero's part.
The story would've been so much better if it showed the hero blossoming into a reliable young man contemplating on his past mistakes and treating the demon king better. Making the demon king realise his worth in hero's life is more than just chores and sex. Like when the demon king asked if hero's happy with him he goes "yeah, you cook for me, you clean for me and being with you is fun (when they literally only fuck cuz there been no dates to have "fun") like I was screaming throughout!!!