Die For Me! has a high chance of instantly killing all enemies. It drops their HP to 0 and its accuracy is affected by resistances to Dark.
In Shin Megami Tensei IV Apocalypse, Die For Me! does severe Dark damage and does not instantly kill the enemy unless its user is Smirking. If its user is smirking, it has an 80% chance to kill any non-boss enemy. If it is used on a boss while Smirking, it does damage, as usual.
Die For Me!, like other instant death skills do not affect bosses. The way that the boss blocks it differs from game to game. If there are no damage-dealing Light or Dark skills in a game, all bosses have an innate immunity to such attacks. If there are any damage dealing Light or Dark skills, then bosses will automatically block all instant kills even if they are weak to these elements.
In Shin Megami Tensei V, Die For Me! deals 2-5 medium Dark hits to the enemy party. Enemies weak to Darkness have a chance of being instantly killed if hit.
In the Japanese version, her signature move "Die for Me!" is written in an interrogative (死んでくれる？, Shinde Kureru?)? rather than an exclamatory form. This possibly makes a reference to her question, "Could you please die for me?" instead of a direct command.
In Other Languages
Die For Me!
死んでくれる？ (Shinde Kureru?)
죽어 졸래? (Jug-eo Jollae?)
可以為我而死嗎？ (Kěyǐ wéi wǒ ér sǐ ma?)
Within Persona 5 Royal's internal files, there is an unused Accessory called Crown of Death that, when equipped, allows any party member to use Die For Me!.
In Shin Megami Tensei V, Die For Me!'s attack animation uses many motifs from Alice's Adventures in Wonderland, including playing cards, clocks, and dessert forks.