I find the Simon Family’s introduction a bit abrupt and lacking proper setup. I think it would work much better if there were a short preparatory arc that naturally builds into it.

This could take advantage of Iemitsu’s first proper mention in the Future Arc, establishing him as the leader of CEDEF. Instead of the Simon Family being introduced out of nowhere later, Iemitsu could be the one who first informs Tsuna about the Inheritance Ceremony.

For example, we could have a short arc where Tsuna, after obtaining Natsu (present version), becomes curious about his father and asks Reborn about him. This leads them to CEDEF headquarters, where Basil is already waiting for them. Basil could also have his own subplot, like he’s frustrated that Iemitsu has been preventing him from going to Japan to meet Tsuna.

From there, Tsuna and Basil team up to track down CEDEF’s boss, only to end up facing Iemitsu himself. Instead of a straightforward confrontation, Iemitsu tests Tsuna and uses the encounter to teach him what it really means to be a mafia leader.

After being satisfied with Tsuna’s growth, Iemitsu finally hands him a letter from Vongola Nono (the same one later used in the original Inheritance Arc) and begins explaining CEDEF’s origins. This could include how Alaude played a key role in establishing CEDEF and why they’ve been maintaining secrecy around the Simon Family’s existence—while deliberately holding back the Daemon Spade material for a more in-depth flashback during the actual Inheritance Arc.

Overall, I think adding a short arc like this would give Iemitsu a proper introduction and better foreshadow later revelations. It would also make CEDEF and the Daemon Spade/Simon Family lore feel more naturally integrated, instead of coming across as something suddenly inserted in the final arc.

What do you guys think?

There should be a short arc bridging Futrure Arc and Inheritance Arc involving CEDEF