I absolutely love this game, that said it's got some issues. For as solid as azure moon is, the other routes all needed more time in development. Two of them (silver snow and golden deer) are basically the same thing but with a different coat of paint. Crimson flower is missing a few chapters at the end, setting up an enemy that you never get to actually fight. All of the routes offer something new that might encourage you to play. Although the first half of each is basically the same (safe for the students) and by the third time you're playing, even the second half will get boring. To help this I definitely recommend taking breaks from route to route.
That said the combat is really fun and the time you spend on the monastery directly affects the bonds between the characters as well as their output in battle which is extremely rewarding. There's actually some mechanics the game doesn't tell you about it's a bit of an issue but it also means you might be discovering new things into your second/third/fourth playthrough. The characters are by far the best part imo from charming to complex there's a colorful cast to enjoy, as you get to learn more and more about them through supports.
If you want to play what I would say is the best order for routes is azure moon then silver snow then verdant wind and then crimson flower
Also the music is a fucking banger.