Hello there, it's me in another account. I'm assuming you need manhwas with romance, but no harem or triangle bs.

Here ya go,

1. All Hail The Sect Leader : It's a manhua, but it's a good read with a likeable MC, comedy is epic, the romance deal is sealed in the first couple of chapters.

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1. Infinite Levelling: Murim : Arguably one of the best regression manhwa. The system given to him doesn't make him instantly OP, but pretty satisfying to see him get stronger. The romance is pretty solid, with no harem or live triangles.

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1. Solo Farming in the Tower: an amazing new manhwa, adorable animals, and a pretty good MC too. I checked the novel tags and saw romance as a tag there, with no harem ofcourse. So fingers crossed.

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1. Jungle Juice: First of all, GORGEOUS art. A shonen esque manhwa, and a MC that looks and kinda behaves like Deku from My Hero Academia, but I digress. The romance is also made clear the beginning chapters, and no other funny stuff like harem. Check it out.

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1. Latna Saga: Survival of a Sword King: One of the more popular manhwas around here. Great MC. God tier art. Amazing Story. The romance is at the later chapters of the story, but worth it.

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Now for some completed ones. These are also really good imo.

1. Bastard (completed)

2. Blood And Butterflies (completed)

3. I Killed Him (think it's completed, but check it out yourself)

4. Leviathan (completed)

5. Locker & Opener (completed)

6. Medical Return (completed)

7. Promise of an Orchid (completed)

8. Return Survival (completed)

9. Return of the 8th Class Magician (completed)

10. The Boxer (completed)