Carbon Pattern Printed Ehomaki Sushi Roll

The user saw an Ehomaki (a traditional sushi roll for Setsubun) with a checkered pattern printed on the nori (seaweed). They wondered what it would look like with a carbon fiber pattern and asked Nano Banana to generate

I saw an Ehomaki with a checkered pattern printed on the nori, so I wondered what it would look like with a carbon fiber pattern?