Responses
This one, maybe
http://www.mangago.zone/read-manga/taiyou_ni_nurete/
Eep sorry it's not it. I may have been vague in describing the plot.
The ike gets home and saw his childhood friend his condition was later revealed though
Yaoi - Seme and uke are from the same town.
Uke have an allergy to sun and seme always had a crush on uke's porcelain skin since he avoids being basked under the sun.
Hmmm the plot seemed like the uke just came home and the seme felt happy... And rekindles his feelings on uke