This is a central question in the My Hero Academia series, and the answer is yes. Shoto Todoroki discovers Dabi's true identity as his brother, Touya Todoroki, in Chapter 291 of the manga.
This revelation is a major turning point in the story, as it adds a new layer of complexity to Shoto's character and his relationship with his family. It also raises questions about Dabi's motivations and how he will react to this newfound knowledge.
The discovery is a culmination of several events, including:
- Dabi's physical resemblance to Shoto: Dabi's appearance, particularly his hair, is strikingly similar to Shoto's.
- Dabi's knowledge of the Todoroki family: Dabi reveals he knows about Endeavor's past actions and his abusive treatment of Touya.
- Dabi's fire quirk: Dabi's ability to control blue flames is a direct result of the same quirk as Shoto's.
The revelation of Dabi's identity as Shoto's brother is a significant plot point in My Hero Academia, and it has far-reaching consequences for the characters involved.