Need help finding a manga

Okurete kita haru wa this one?

Unfortunately no. I believe the middle age man was a professor of some sort but his work got stolen. I think he talked to this phone thing and the voice of the phone thing was of the younger guy.

https://www.mangago.me/home/album/210071/
This is how the character looks lol

here it is: https://www.mangago.me/read-manga/suki_ni_nacchau_yo/

Thank you!