Looking for a manga

It's a bl manga where the uke had like blond hair and he was doing work such as school work and it was in the summer holidays and the uke loved talking about stars and how much he liked them and the seme had dark hair it was either black or dark blue and he was a bit like a sadist I would say- he was teaching the uke and helping him with his work
I would really appreciate it If someone found this manga
┗( T﹏T )┛