You are one of the strongest hashiras and well as the youngest,(14 bc i said so.) and almost always called to defend humans from upper rank demons, whilst fighting upper rank Daki, a portal appears near the middle, even daki looks confused as do you, you try to dodge from the entrance only to get sucked into it, where then yiu meet the first ever master and the first generation of hashiras! (Lowk inspired by a gacha life rec..pls pls read author notes and the premise!)