Hidamari no Orange

"Can I come here again?"

Nanami is a first-year high school student who hasn't been doing good at school. At the art-prep room, he meets Takanashi -a senior who has placed 3rd in the national-level mock tests- and forces him to help with his studies.

Nanami, who was initially uncomfortable with seniors who had a neat appearance and an atmosphere that kept people away, starts to feel attracted to the gentle, caring appearance and the smile that Takanashi rarely shows in public. ──This relationship has a deadline. What will Nanami, someone who wants to know more about his senior's heart, do?

(Source: Amazon, translated)