If they’re magic crystals they may just be perceived as good by the body in a similar way that sugar is because it provides a ridiculous amount of certain nutrients.
So there’s a fun reason it could be sweet.It could be it’s NOT sweet and she’s just sucking on it to get some mana back
Sugar is produced by plants. Plants that grow magic crystals the same way they grow fruit is also a fun idea here
If they’re magic crystals they may just be perceived as good by the body in a similar way that sugar is because it provides a ridiculous amount of certain nutrients.
So there’s a fun reason it could be sweet.It could be it’s NOT sweet and she’s just sucking on it to get some mana back
Sugar is produced by plants. Plants that grow magic crystals the same way they grow fruit is also a fun idea here
She has a snowflake motif on her clothing, so it's probably ice crystals, not mana crystals. She's also sweating (in spite of what she's wearing), so after a life-or-death battle or just a really intense training session, she made herself ice to suck on to cool down.