Kakashi would probably raise an eyebrow and make a dry joke about Naruto's new look. But he would also be ready to help if Naruto was in some sort of trouble because of it. As for Lee, he might see it as a new form of training or a way to build character. He would encourage Naruto to embrace his crossdress toad look and use it to his advantage in some way, like scaring opponents in battle. Naruto's other friends like Ino would probably gossip about it at first but then get used to it over time.
Often, in these early fanfics, Naruto might show a quicker mastery of toad - related jutsu compared to the original series. His connection with the toads could be more profound from the start.
One interesting 'Naruto Toad Sage Fanfic' could be about Naruto exploring new toad sage techniques that were not shown in the original series. For example, he might discover a way to combine his Rasengan with toad sage chakra in a more powerful and unique way.
One possible reason could be that Naruto wants to develop his own unique ninja way without relying on the traditional toad contract. He might feel that it would limit his growth in a sense.
Obviously, Naruto himself is the most important character as it's about his journey to become a toad sage. The toad sages like Fukasaku and Shima play crucial roles too. They are the ones who guide Naruto and teach him the ways of the toad sage.
Well, in many such fanfictions, one key event is Naruto's initial encounter with the toads in their realm. He might face challenges to prove himself worthy of their teachings. Another event could be his intense training sessions with the toad sages, learning new jutsu and wisdom.
Perhaps Naruto has had some negative experiences or premonitions related to the toads. Maybe he saw something in a dream or heard a story that made him hesitant about entering into the contract. Another aspect could be that he wants to break away from the traditional paths of the ninja in his village and forging a new way without the toad contract is part of that.
Perhaps an ancient artifact in the MHA world has the power of the Naruto toads sealed within it. A villain discovers it first but a young hero - in - training manages to steal it away. Once in their possession, they unlock the toad quirk. They would then need to train hard to master it, just like Naruto did. They could call on the toads for help in battles, use their strong physical attacks and even learn some of the toad - related ninjutsu, adapting it to fit the rules and physics of the MHA world.
One plot idea could be that Naruto crossdresses as a toad for a mission. He has to infiltrate a group that has a superstition about toads being good omens. So, by crossdressing as a toad - like having a toad - shaped costume and mimicking toad behaviors, he gets close to the target and gathers information. Another idea is that Naruto is cursed by a strange jutsu that turns him into a crossdressing toad - like form at random times. His friends have to find a way to break the curse while also dealing with Naruto's new, comical appearance.
One interesting Naruto x Toad Lemon fanfiction could be about Naruto's unique bond with the toads and how it develops in a new and unexpected way. Maybe it involves Naruto learning a special jutsu from the toads that has a lemon - themed twist, like a jutsu that creates lemon - scented energy blasts.