@SARANAEL-T14 yes but that was in a previous timeline, and remember, he died in the future (or should i say the present?), so unlike emma and baji who died in the past, he can still be saved. Takemitchy has defeated tenjiku since then so it's likely that the future has also changed a lot, and i wouldn't be surprised if he's now alive in the future. It's simple really, if he goes now to shake hands with hina's brother, either he goes back to the future, meaning he managed to save him and potentially he might now be in the timeline he worked so hard to create, or if he doesn't go back to the future, it means that for some other reason hina's brother was killed again in the future, which means another arc.