Why is Komachan always depicted with a manly face and big boobs?

Manly face,probably to be seme(or uke,not sure and don't really want to)to eiki.And big boobs?Go play SWR,it's canon.

Someone just linked me to this, and I'm trying to figure out whether or not it's Supon's work - it does look an awful lot like it, but without any kind of source link I haven't a clue.

I'm going to err on the side of caution and just tag as artist_request.