It sounds like you're interested in creating a 180gsm T-shirt featuring the Demon Slayer character Akaza. Here’s a concept for the T-shirt design:
### Front of the T-shirt:
- **Main Image**: The image you provided, with Akaza in his iconic pose, placed prominently in the center.
- **Text**: The quote "Don't compare yourself to others, the opponent you will always face is yourself" below the image, as it appears in the design.
- **Background**: A light grey or black background to make the design and text pop. You could add subtle splashes of pink or purple to match the aesthetic of the original artwork.
Back of the T-shirt:
Plain no print.
### Material:
- **Fabric**: 180gsm cotton for a durable, comfortable fit.
- **Color Options**: Black, grey, or white would work best to complement the design.
Would you like to proceed with creating a mockup or need further assistance?