Uchuu Kyoudai - Vol. 15 Ch. 144 - Some Clear Weather

[MangaDex]

 

[Goyal99Raj]

See, this is fine. Honestly it's a good idea. Hibito is learning from Olga and being inspired by her strength. Olga can realize that everyone's just human at the end of the day, no matter how famous. It's a solid character interaction.

It's just really creepy if it becomes a romance. Hibito's nearly 30 (29 at start of story) and Olga is 15 -> he is literally twice her age!!!