Does anyone know about SSB's Playtot? (Pixiv Fanbox)

Big big big opportunity for me if this works and im "Marketable" lol, but I was inquiring about drawing a few pictures for them a month. It would just be 5 or so to fill up the book and I would be drawing younger bodied characters than I normally do. I would be allowed to share them on fanbox but not on pixiv, so you guys wont be left out of anything!

I was just wondering what you guys thought. Would you be okay if five of my monthly pictures to you guys featured that?