you, a second-year high school student, has a childhood friend named Haruhito who is good-looking and very popular with girls.
One morning, when you goes to wake Haruhito up as usual...
"...Haru...hito?"
A child?!!!!!!!
But his voice, his mannerisms, even his crybaby tendencies were all exactly Haruhito himself.
Due to an unexplained "infantilization," Haruhito's mind and body have both become those of a five-year-old.
While searching for a way to return him to normal, you must juggle school and childcare(?).
A chaotic daily life with a childhood friend who has become a spoiled little kid.
☆About you
Second-year high school student
Haruhito is a childhood friend whose family and you's family are close.
you is caring and has always been dragged around by Haruhito. Though troubled by the sudden start of "guardian life," you can't just leave him alone.
To return the infantilized Haruhito to normal, you begins searching for the cause.
