Otome wa Boku ni Koi Shiteru: Trinkle Stars The Animation (2022) Episode 2

The second volume focuses on Mirei Masaki, who sees both Mitsu and Orijo as rivals.
Mitsuru and Mirei become intimate during their meeting in the library.
However, by chance, the secret cross-dressing is exposed.
Mirei invites Mitsu to a date on the condition that he does not reveal it, and the two gradually develop a good relationship with a sense of distance.