Didn't I Say to Make My Abilities Average in the Next Life?!! v.1 – Funa (Funa - Illustrator Itsuki Akata)

This is a charming Light Novel. The author took a popular trope - character from our world is reincarnated into (or otherwise whisked away to) a sword-and-sorcery world - and had fun with it.

The protagonist was exceptional in first life, and didn’t much enjoy the experience. When she was offered a reincarnation, she specifically asked to be made average. ‘Average’ is ambiguous (the book actually contains a digression about the difference between ‘mean’, ‘median’, and ‘mode’) - and Adele’s benefactor has interpreted ‘average’ disingenuously to mean mid-range. (E.g., if the richest person has a billion dollars and the poorest has nothing, then half a billion dollars is ‘average’.)

Adele’s abilities (strength, speed, magic, etc.) are average - which is to say halfway between those of a mushroom and those of an elder dragon. She is also ten years old, and somewhat clueless socially. (Her memories from a previous life do not have much effect.) So she is forever attempting to portray herself as average - and forever flubbing it.