Eri commission (Pixiv Fanbox)

This has nothing to do with the illustration but in the manga (spoilers for those who watch the anime only), in chapter 353, after todoroki "defeats" dabi for the first time, once they announced it, sero has that ominous ellipsis that has been bugging me for quite a while i'm just waiting for the twist/reveal or just something, or maybe it's not adresses it at all and sero just had nothing to say haha unless i misinterpreted it, i don't follow any fandom or theorists so i don't know if it's bugging anyone else