Usage
Just add "shirt behind neck, bare pectorals" to your prompts, LoRA weight 0.5~0.9.

This LoRA is trained mainly on muscular male, straight-on image from Danbooru, it also includes a smaller portion of side, below, and above angles.

When aiming for toned male or skinny body types, you may need negative prompts such as "muscular male, thick arms, large pectorals", especially in high weight.

Works with both "t-shirt, short sleeves" and "tank top, sleeveless" cases, "shirt, long sleeves"might work but not stable.