Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 10 - Intermission: Golden Knight and the Caged Birds

Elliot Hawthorne, had transmigrated into the body of a struggling apprentice mage, and now had one simple goal, summon a small, harmless spirit to pass his magic academy’s final exam. But thanks to a mistranslation in an ancient grimoire, he instead summons Azrael, the almighty Demon King.That would’ve been bad enough…. but then the spell accidentally binds them in an unbreakable marriage contract.Now, Elliot is stuck with a possessive, dangerously powerful, and ridiculously affectionate demon husband who:Carries him everywhere because “His cute little summoner’s feet shouldn’t touch the ground.”Summons hellfire just to keep Elliot warm when he complains about the cold.Declares war on any kingdom that dares to call Elliot “single.”Refuses to be unsummoned.“Why would I leave? My husband is here.”Worse, every holy knight, exorcist, and jealous god now wants Elliot dead for “stealing” the most powerful demon in existence.. Stuck with a one-in-a-million system dungeon and a devilish Demon husband, Elliott's life is constantly on the brink of disaster...But when Elliot starts uncovering secrets about the contract, he realizes…Did I really summon him by accident? Or… was Azrael waiting for me all along?One way or another, Elliott’s unlucky life becomes worse. An impending doom threatens the existence of the human and mortal worlds.And as if that wasn’t enough, he’s also stuck with a Demon for a husband.But maybe, just maybe… being bound to a dangerously powerful Demon King isn’t the worst fate after all.

No family, no power, no inheritance — a thrice-lacking protagonist. Just how will the seed rise up from the mud?

- Description from Novelupdates

Being second best is practically in my DNA. My sister got the love, the attention, the spotlight. And now, even her damn fiancé.Technically, Rhys Granger was my fiancé now—billionaire, devastatingly hot, and a walking Wall Street wet dream. My parents shoved me into the engagement after Catherine disappeared, and honestly? I didn’t mind. I’d crushed on Rhys for years. This was my chance, right? My turn to be the chosen one?Wrong.One night, he slapped me. Over a mug. A stupid, chipped, ugly mug my sister gave him years ago. That’s when it hit me—he didn’t love me. He didn’t even see me. I was just a warm-bodied placeholder for the woman he actually wanted. And apparently, I wasn’t even worth as much as a glorified coffee cup.So I slapped him right back, dumped his ass, and prepared for disaster—my parents losing their minds, Rhys throwing a billionaire tantrum, his terrifying family plotting my untimely demise.Obviously, I needed alcohol. A lot of alcohol.Enter him.Tall, dangerous, unfairly hot. The kind of man who makes you want to sin just by existing. I’d met him only once before, and that night, he just happened to be at the same bar as my drunk, self-pitying self. So I did the only logical thing: I dragged him into a hotel room and ripped off his clothes.It was reckless. It was stupid. It was completely ill-advised.But it was also: Best. Sex. Of. My. Life.And, as it turned out, the best decision I’d ever made.Because my one-night stand isn’t just some random guy. He’s richer than Rhys, more powerful than my entire family, and definitely more dangerous than I should be playing with.And now, he’s not letting me go.

In the spirit of love and in order to help his ex-boyfriends walk out from the shadow of heartbreak, every time before Ye Ming leaves after successfully completing each world’s romance mission, he will ‘kindly’ (ruthlessly) break up with with his boyfriend.

After transmigrating to N different worlds he had finally gained enough experience. At this time the system informed him that because the accumulation of his ex-boyfriend’s grievances had exceeded critical levels, leading to the failure of all his missions…. So he needs to return to each world to eliminate their grievances if he wants to complete his missions!

Ye Ming: This is an outcome I didn’t predict.

System: I tried to tell you before that if you did this you won’t have a good end.

The ex-boyfriends all laughing coldly: He He. That despicable scum that ran away after deceiving my feelings is finally back. This time don’t even think about running away!

Ye Ming: ……

System: Since you “zuo” yourself to death, even if you kneel you have to go to the end!

Ye Ming: Luckily I have a special “scum cleaning” technique ^_^

- Description from Novelupdates