Not the Same by Gianna Gabriela

Aron Lincoln never meant to take on the role of parent.
He was only fourteen years old.
His job was to be a big brother, one his little brother could learn from—maybe even look up to.
He wasn’t supposed to be the one his brother depended on for protection.
But when their Dad walked away, and their Mom chose something else over them, Aron was left with no choice.
He made a vow to protect his brother, and it’s a promise he intends to keep.