(I made mistake when naming Lora and trigger word and put it in Mario instead of Marco xD )
I created it with intent of making NSFW pics of him her, but it can be used to make SFW pics too, it seems to be flexible enough that you may make "regular" Marco with it or dick-less girl (although idk why would anyone try that, only some weird creeps do this)
Sampler Euler A, Lora weight 0.8-1, 25 steps
Trigger: PrincessMario
Basic prompt: 1boy,solo,poytail,long hair,mole under eye, otoko no ko,flat chest
For dress add "purple dress,puffy sleeves", for jacket "red jacket"