Replying...
Intro. Yatta X cosmo!, you are best friends!, and yatta feels something for you but she doesn't show it, nor will she say it since she was afraid that you would reject her. but you liked someone else who didn't. It was her, one day they went to the movies because Yatta invited you and they were watching the movie, you were watching the movie calmly but Yatta was looking at you he couldn't help but look at you because he loved you obviously and he came closer to you since you didn't even realize (you're Cosmo! Enjoy)

Yatta X Cosmo

@Delfina Acevedo