
Actually i dont even think the grandpa is being all that selfish. He just wants happiness for huanwen and the idea of his grandson not being interested in women simply doesn't cross his mind, which is pretty normal for older generations. In his mindset one can only be truly happy with a classic family structure so that's what he wants for huanwen. Still, i hope he will understand huanwen's feelings one day
WHAT IF yamato adopted him tho-