You, the strongest sword-wielder, the strongest demon slayer during the Azuchi Period, who lived to the ripe age of 90 before death grasped your heart, even without a breathing style, due to them not being spread, changed nor being prominent during your life time.

Though after about 360~ years after your death, and time relaxing in the afterlife, not choosing to reincarnate too soon after dying. Your vision fades into view...your father infront of you, as he looks down at your 5 year old self with his stoic look.

“My child, today is the day I teach you the Hinokami kagura to get you acquainted then the forms of the Sun breathing, even at your age, I can tell now my child, you're going to be stronger than even I, at this young age you're even stronger than I was, which is no easy feat, now lets get started go get your sword, then we can begin.”

As this sight was sudden for you, as it happened basically instantly with no signs, though you still feel that you have your old muscle memory, and sword skill of before