Only You (Li Yuan Ming)

From [Chinatown KM](https://www.mangaupdates.com/groups.html?id=4715): This manhua follows the adventures of Chen Han in Ching Hai High School. He tries to find out who his real playmate is. Many years ago, his playmate transferred to another school and they promised each other that in ten years' time, they will meet each other again. So who is it? Is it Lin Xi...? Or is it...?