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Kazuki Tanaka is just an ordinary convenience store clerk living a peaceful, predictable life in the quiet town of Midori. But everything changes when Lilith, a stunning yet terrifying demon princess, storms into his store, mistakes his mop for a legendary sword, and declares him the “Great Hero” who defeated her father. To seal a peace treaty between the human and demon realms, she proposes marriage—on the spot.

Before Kazuki can explain the obvious misunderstanding, Lilith puts a magical engagement ring on his finger, binding him to a contract he can’t escape. Now, Kazuki must survive life as the unwitting fiancé of a demon princess while the real Great Hero desperately tries to undo the mix-up.

Caught between otherworldly politics, comedic misunderstandings, and his new fiancée’s relentless determination to win his heart, Kazuki’s simple life is over. But hey, at least he still has his mop.

The Demon Princess Wants to Marry Me, But I'm Just a Shop Assistant

At this point, I had accepted a simple truth:

My life was no longer mine.

One moment, I was just a simple convenience store worker. Now, I was:

✅ Being trained by literal monsters.

✅ The target of assassins (plural).

And today, it got even worse.

A Relaxing Bath? Yeah, Right.

After surviving yesterday's murder training session, I was rewarded with…

A trip to the royal bathhouse.

Big, fancy hot springs? Free food? No exploding dummies? Sign me up.

Assassin Attack #2: Now With More Soap

I was just about to step into the steaming hot water, when suddenly—

A masked assassin burst through the ceiling, katana in hand.

Do you know how hard it is to dodge an assassin while holding only a bar of soap?

I screamed, slipped on the wet floor, and accidentally launched the soap at the assassin's face.

It hit him directly in the eye.

"GAH! SOAP?!" he shrieked, clutching his face.

He stumbled backward… and slipped.

His head smacked against the bathhouse floor with a loud thunk.

The assassin twitched, then passed out.

Did… did I just win?

The demon guards stormed in seconds later.

Lilith appeared behind them, looking concerned. "Kazuki! Are you—"

She paused. Her eyes darted from me, standing there in nothing but a towel, to the unconscious assassin.

"My love, you truly are an unpredictable warrior."

Ryuu, who had just arrived, facepalmed. "Oh, come on. He won with a bar of SOAP."

Lilith nodded. "Yes. And it was magnificent."

I wanted to crawl into the hot spring and never come out.

Demon Nobles and More Nonsense

After the bathhouse incident (which I'm trying very hard to forget), I was summoned to a meeting with the Demon Nobles.

They wanted to discuss the upcoming wedding.

The one I never agreed to.

I sat at a massive table, surrounded by powerful demons with fancy outfits and serious faces.

One of them, an old demon with a ridiculous mustache, cleared his throat.

"So, Kazuki-sama. How many heirs do you plan to have with our princess?"

I CHOKED ON MY TEA.

Lilith, meanwhile, looked completely unfazed. "Hmm. At least five, I think."

I turned to her in horror. "F-FIVE?!"

She smiled. "Well, six if we have the time."

Ryuu, sitting next to me, was sobbing into his hands. "Why am I still here…"

The nobles nodded approvingly. "Ah, strong heirs will be needed for the future of the kingdom."

I raised a hand. "H-Hold on! We're not even married yet!"

Lilith patted my arm. "Oh, my love, you're so shy."

I wasn't shy. I was having a breakdown.

And then, as if my suffering wasn't enough, another noble spoke.

"Oh, yes. That reminds me. The wedding is in three months."

Ryuu choked on his drink.

Assassins, A Bathhouse, and My Continued Suffering