Shirou is a normal teenager until he and his wheel chair bound sister (Koyori) get their hands on Strings Dolls note a mysterious tablet game, that allows you to control a person's body. At fist they just use it for slight mischief until they discover they can use it to make Koyori walk again. A few days later Shirou takes Koyori on to a boat to celebrate. The day seems perfect until Shirou notices a man trying to kill himself, The Strings Dolls won't work on this man either, so Shirou grabs him and pulls him off the ledge only to find out he wasn't in control of his body. He looks back to see his sister plummeting off the edge and into the water's below, she is rushed to the hospital unconscious. A few days later he discovers a mysterious person named Miyavi is behind his sister's current state and he swears to hunt him down and kill him.
- Bishie Sparkle: Kiriyuu has this and it's even lampshaded by Shirou.
- Driven to Suicide: Played with, none of them want to commit it, it's just that their bodies are moving on their own.
- Happily Failed Suicide: All of Miyavi's victims thus far are attempted suicides but none of them want to kill themselves.
- Ill Girl: Koyori is bound to a wheel chair, and then later a hospital bed and breathing tubes.
- Interrupted Suicide: Shirou saves the unnamed man from killing himself, only to find out he wasn't in control of his body.
- It's Personal: Shirou promises to kill Miyavi for what he did to his sister.
- Knight Templar Big Brother: Shirou seems to be one of these.
- Out-Gambitted: Miyavi suffers this at Shirou's hands in the finale.
- Roaring Rampage of Revenge: This is what trigger's the plot.
- Spell My Name with an "S": Is it "Miyabi" or "Miyavi"?
- Start of Darkness: Shirou starts slipping into being an Unfettered Villain Protagonist by the third chapter, but it's still to early to say whether or not he will catch himself. He does; he even throws away his own tablet at the end.
- You Gotta Have Blue Hair: Koyori has lavender pink hair.