It's what the author and character liked. Personally I don't like mustaches, love beards, but every is untitled to their preference in character design. I do think he looks cute in his mustache especially in the basketball uniform.
Yeah lol I can see she has a preference. One that I will never, and wish to never understand, but oh well. We'll I'm glad some people are enjoying it I guess! I had to stop halfway through because id become enraged everytime I'd see the captain. He had so much potential :(
Does that mean you didn't get to the part where he shaved it off?? I do not like facial hair either (though I tend to overlook a lot of things I don't like, since that is not a deal breaker).
Of all the features they could give, why a mustache? They don't even look good.on real people let alone Manga characters! I curse this society that considers a face caterpillar attractive.