Yuizaki-san wa Nageru! - Vol. 5 Ch. 61 - Oomiya-kun Won't Give Up.

[MangaDex]

 

[Lyanhyrt]

Sudden romantic feelings. Must be near the ending.

 

[ReaperCreeper]

Common trope that it is, never really pictured her showing any romantic sort of feelings before.

 

[KatouEgao]

@Lyanhyrt Look at the thing, it's 61/65

 

[Kisato]

The best ending is if Oomiya beats his personal best and practices more.