The fall 2020 anime series Fly Me to the Moon, aka Tonikaku Kawaii, aka Tonikawa: Over the Moon For You, clearly finished awhile ago but they had a bit more in the chamber as an OVA was put into production for an August 18th, 2021 release date.
Nasa confesses his feelings, but her response is that she will only go out with him if they get married.
The series began back in February 2018 as serialized in Weekly Shonen Sunday.