moch's Questions (2)

so i was reading this manga abt this cleaner boy who has a stutter and then there’s another character whose like a business guy but he’s so sweet to the stutter boy and i lost it cryyy but it was so cute,, if anyone knows the title pls tell xo

so i was reading this sad manhwa before it was like abt this boy that found a telephone and he was phoning this boy that died and the boys name was jae-ah or smth does anyone know what it is called bc i lost it cry