Settings:
The setting here is that Tsunayoshi had superpowers when he was born, but was suppressed by the fire of death, so he did not show his superpowers when he was a child. Because the Kudaiime sealed Tsuna's fire of death when he was 5 years old, the superpowers gradually emerged. However, because the fire of death suppressed the superpowers for 5 years, the superpowers were still very weak at first, and only in Tsuna's life. Yoshi will explode when his mood is unstable, but as Tsunayoshi gets older, his superpowers become stronger and stronger. When Tsunayoshi was ten years old, he successfully mastered superpowers, but he was afraid that he would be considered a monster for having this ability, so he didn't tell anyone, including Nana's mother. Even Hibari-senpai only knew that Tsunayoshi was strong but didn't know that he had superpowers!