Yoriichi was 7 years old when he first spoke and defeated the swordmaster who was teaching Koku, showcasing his talent, only to run away to avoid stealing the successor position from his brother running for an entire day before meeting Uta, whom he spent 10 years with before getting married.
When she died, Yoriichi spent 10 days crying over her corpse until the demon hunters found him and he decided to join them, he taught them breath techniques and forms, in this same panel he said "even my brother joined after his men were killed"
when did he meet his brother?
They met 10 years after Yoriichi ran away, and then he joined the hunters where before long he manifested a mark of his own, then we see muzan soon after that statement, whom Yoriichi stated he met soon after after Koku joined the hunters which happed 10 years later per his backstory.
So Yoriichi should be "17 in his prime".
When she died, Yoriichi spent 10 days crying over her corpse until the demon hunters found him and he decided to join them, he taught them breath techniques and forms, in this same panel he said "even my brother joined after his men were killed"
when did he meet his brother?
They met 10 years after Yoriichi ran away, and then he joined the hunters where before long he manifested a mark of his own, then we see muzan soon after that statement, whom Yoriichi stated he met soon after after Koku joined the hunters which happed 10 years later per his backstory.
So Yoriichi should be "17 in his prime".
