Sahan

Despite Earth's advanced space industry, Sahan'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, Sahan finds himself leaning on Heegeon, the little boy next door who is now an adult and hasn't forgotten him. Heegeon might be the only one who can help Sahan find his place in a world that has long moved on without him...

Original Webtoon

Official Translations
English