Depicts the journey of three sets of childhood friends - 'childhood friends with a physical difference,' 'childhood friends who are conscious of height differences,' and 'childhood friends with an age gap' - until they start dating.
*"I wish I had liked you when I was a high school student "*Osamu's girlfriend refused his proposal with these mysterious words. After that, in an accident, he time-leaps back to his high school days. He was trying to find her and make her fall in love with him again, but when he met her she had a twin sister! ??
