My Girlfriend's Not Here Today Vol. 2 (manga)

Yuni loves how passionate her secret girlfriend can be, but honestly…? It’s starting to feel like volleyball takes up all of Nanase’s time. Especially when her latest game is all the way in Osaka, where Yuni will not only have to spend a lot of money but also be alone most of the time. However, Fuuko offers the perfect solution: She’ll pay IF Yuni goes on a date with her. It’s not cheating if you’re doing it to support your girlfriend, right?