This is just an idea of mine for how it’d work. No, this isn’t regarding a specific fetish nor am I asking for a Mawashi as apparel.
The idea just kind of came to me.
Strength scales with fatness, speed scales inversely (meaning it drops), both stats have a cap on how high/low they go.
Bonus when engaging in hand-to-hand. Adds a grapple move that deals serious damage but is limited by enemy fatness and player strength*.
STR +
INT =
AGI -
VIT +
WIL =
*Whether or not a grapple is successful comes down to a dice roll. Having high strength and/or fatness tips the odds in your favor. However, the fatter/stronger your enemy is the less likely to succeed you are.