Also known as: ルミナス(魔法少女まどか☆マギカ), (っ_́ω`(_́ω`c)ルミナス
The theme song of Mahou Shoujo Madoka Magica Movie 1 & 2.
Also refers to a moment in the theme song where Kaname Madoka and Akemi Homura rub their cheeks together whilst sitting on white chairs, which has become a meme in the fandom.