Despite Earth's advanced space industry, Sa-Han's moonbound spaceship crashes, leaving him stranded out in space for a year. When he's rescued and brought back to Earth, he finds that 11 years have already passed there. While struggling to overcome his space trauma and adjust to the many changes on his home planet, Sa-Han finds himself leaning on Hee-Geon, the little boy next door who is now an adult and hasn't forgotten him. Hee-Geon might be the only one who can help Sa-Han find his place in a world that has long moved on without him...(Source: Tappytoon)
— Description from AniList community (anilist.co).
