Unfortunately, dating and marrying your cousin in Japan is normal and legal. and sex is normalized in Japan there's even something called outdoor sex. Japan is a lonely country but their likelihood of sex is too much they even have a day where they celebrate fertility and has penis outfit worn on that day, penis candy to be sold publicly on the street for that same day, and a very huge penis statue to parade for that day too. Some of the Japanese is weird so reading this in manga is just normal.
DAMNNNN WHAT I NEVER KNEW THAT
And there's also womens wearing a cardboard like a shirt and it has two holes in front and the only thing covering it is cloth and they wear it naked (no shirt and bra) but they wear shorts so don't worry. While they wear that they go to public places and allow citizens/people walking to go and insert their hands to touch the woman's boobs. There's still many things I want to say but I'm getting lazy as of now.
SOOOO WHO THE HELL WAS THAT GIRL HELLO????? HIS SISTER OR WHAT BC WHO THE HELL KISSES SO NORMALLY INFRONT OF THEIR LOVER????