The problem isn’t one generation. That’s usually fine (though you might want to get genetic counseling to make sure there aren’t nasty recessives)
The problem is repeated cousin marriages over successive generations.
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Oh sorry I couldnt see the last part. I mean even if that is so, these are two men lmao. So again, the only problem is negative societal views based on literally nothing. Nothing wrong with them getting together.
Omg youre right tho.
The only reason incest I seen as bad is because the offsprings would come out.... you know, but if there's no offspring...then technically there should be no problems.
Children between first cousins have almost identical statistics to children from randomly selected parents. So the only thing ruining this manga for y'all are the stereotypes in your own society. Lots of places have no problem with 1st cousins being together. Pretty sure it's legal to marry your cousin worldwide