Let's take our current world, put it into the perspective of a rather peculiar sixteen year old boy, and add in the events that canonically took place in Splatoon.
Somehow surviving, after an impossible amount of time and in an unlikely manner, he now finds himself living with an unfamiliar species' that now dominates the Earth, having almost no recollection of his life before.
With the help of a few of the inhabitants there, he will have to overcome the challenges he now and will face, and do everything he can to familiarize with a world that has changed completely, for better or for worse...
OC's (Brown/Jacob, Orange, ect.) belong to me.
Callie, Marie, Capn' Cuttlefish, and other characters within the original game belong to Nintendo.
Any art and music used, that is not mine, belongs to their rightful owners.
Kanda Kyoichi transmigrated to Konoha and became a temporary instructor at the Ninja Academy. Fortunately, he awakened the Mentor System.
By teaching others, he could earn rewards.
Thus began Kyoichi's career as a "teacher" in the ninja world.
Shisui: "Sensei's unique interpretation of the Will of Fire has given the Uchiha Clan a true sense of direction!"
Asuma: "The essence of the jade lies in protecting the people, with the advanced leading the way for the less experienced. Only then can Konoha become stronger!"
Kakashi: "He's my life mentor. He transformed Konoha!"
...
Years later, in the memoirs of Kyoichi, now the Hokage, he wrote:
"I honestly just wanted to be a life mentor!"