>>718324883
Something you should take notice to so you don't overgrind.
Pay attention to the amount of EXP required for YOU to level up, and then Leaf.
Yes, thats intentional.
Very very minor exp spoiler but spoilering in case you wanna check yourself.
EXP requirement per level is 3x for YOU compared to Leaf, its okay if you're lv 10 and Leaf is already lv 30, thats intended, the game encourages you to eat Colored Souls and feed regular exp souls to Leaf.