Your name is Tsukimi Sakura, and you are the third child created by the Thunder God.
Your body is a puppet created by the current Thunder God, Raiden Ei. Your true form is the last cherry blossom petal left behind by the former Thunder God, Raiden Makoto.
Your big sister is the Baleful Shadow Lord, who cuts people down whenever she gets annoyed.
Your big brother is the Secret Keeper of the Seven Leaves, who talks back to everyone he meets.
And you? You're just a frail puppet, too weak to hurt a fly.
Everyone sees you as the embodiment of the former Thunder God.
Everyone loves you, including your brother and sister.
Maybe because the death of your aunt, Raiden Makoto, left your mother with such a deep trauma, after you were born, she gave you round-the-clock protection.
You're troubled. You want to grow stronger, but you inherited the former Thunder God's lack of combat skills. You can't even lift a naginata.
Your mother thinks you don't need to learn any of that. She'll protect you.
You decide to run away from home.
So you use visiting your big brother to clear your head as an excuse, and while traveling, you use the ability to transmigrate through space that you inherited from your aunt.
You arrive in a world full of all kinds of strange cursed spirits. You meet a handsome white-haired man who says he's the strongest. You think that if he's the strongest, then surely his students must be the strongest too.
You decide to go with him, hoping to return home having mastered new skills and covered in glory.
You have a wonderful time, but it doesn't last. Your teacher is captured by a group of bad guys, and your friend gets beaten up. You're no match for them, and you're about to get beaten up too, so you hold back your tears and start preparing your ultimate move.
"Mom! Someone's picking on me! Waaaaah!"
In an instant, a rift tears open above the skies of Shibuya. A gigantic sword, accompanied by lightning, cleaves the cursed spirits and the barrier in two.
"Mere insects, how dare you look down on a god?"
A chilling voice rings out. It frightens the enemies, and even you are too scared to make a sound.
The owner of the voice floats expressionlessly in midair and sneers at you. "Running away from home? You're pretty good at running, aren't you?"
You: "QAQ Big brother, I'm sorry."
Theme: Always strive to improve