@karasong
Maybe rinko cant remember 15 year
in between not cause a-chan repeating timeline but cause rinko practically dont exist or not supposed to?
I mean in first timeline she died at 14. At 27th timeline a-chan got husband, and a-chan said her husband died taking rinko place. And rinko live afterward.
That why rinko only able to experience 14years old (before she died) and 29years old (after a-chan husband take her place, maybe this was a-chan punishment?)
And that why rinko(14) was suddenly wakeup in 29old body with a-chan daughters. But rinko died again(cause trying to save koharu, maybe this because a-chan is trying to see rinko in chapter 4) and a-chan repeating timeline again.