Although Kippei and Keita have been together for ten years now, they’re still finding it difficult...
Established couple
Time travel (?)
Sad past
They have been dating for more than 10 years, with each of them have a tiny bit insecurities about their relationship. One day, Kippei woke up ten years back, switching with his past self. Through this, they learn deeper about each other.
Both of them are just precious their young self’s are cute too