Likewise, Toya was very excited to learn all of his father's moves, including his strongest ones. He put his dreams onto Toya, promising he could become Number One and surpass All Might. To enforce this, Toya was given fire-themed items like shirts. His father's legacy as the Number 2 weighted heavily on Toya, feeling more pressured to be a hero then his school peers. He'd even call his father by his hero name on occasion. Enji wanted to press on with Toya's training, dismissing his unexplained hair change. Though when Toya's Quirk began burning him, Enji finally saw a doctor over the issue.
The doctor stated Enji designing his children through Quirk marriages was ill-advised. It turned out the exact combination Toya received from his parents' ice and fire Quirks, was self-jeopardizing.