I think the family would welcome it. Only Azuma and the the climber would complain, and maybe Akane since she likes Koh.

Wait, if you want Akane with Akaishi, and don't want Aoba with Koh, what ending do you envision? Koh lives on alone remembering his dead first love? That is kind of tragic.

Please don't tell me it is KohXAzuma.