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i need help

Valeria222 May 17, 2026 8:07 pm

I’m trying to remember the name of a Japanese fantasy romance manga.

The female lead is a neglected noble girl who is constantly compared to her beautiful sister. Her family plans to marry her off think, so before running away she decides to spend one night with a handsome stranger.

The guy turns out to be the male lead/hero (I think he had red hair on the cover but i can be wrong), and he has a personal rule that with the first woman he sleeps with becomes his wife.

There’s also a priestess/saint character who was isekai’d from Japan. At first she seems suspicious or antagonistic, but later it’s revealed she’s actually a good person. She’s also very flirtatious/open about sex.

It’s a black-and-white Japanese manga (not a manhwa/webtoon), and I think the title was very very long.

Does anyone know this manga?

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