The two MLs are brothers (real bio brothers with same Mom and Dad) and they have once literally fought each other almost to the death due to MC. It's def a love triangle now. And there were some instances of threesomes, once or twice, I think. But spoilers if you wanna know...
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One of the brothers is suicidal and is planning to die alone soon. So it might end with just one ML, but if this is going to have a happy end, it would be that all 3 of them end up living together happily.

I want to avoid threesome story or love triangle please save my time pretty please