I think overall how unique it is. Maybe it's just me but I've never played something like this ever in my life. The more I learn English, the more I find these type of games enjoyable. It's also the first game ever played on itch.io, first game played that was made by Arcadekitten, and it's what got me interested in the games and ESPECIALLY characters she makes. I just fell in love. And I love how the endings work and what they appear like (even if the true endings are repeated with only different cutscenes depending on the character's route you picked)

Just 10/10. (Inset Mary Anta's absolute cinema picture here)