Kaeya Alberich, on the outside, is a very flirtatious and charismatic young man from the Knights of Favonius. Known for being a ladies man, he flirts with any beautiful face he sees. However, on the inside, he is cold, calculating, demented even. He will do whatever it takes to keep his beloved by his side and his side only. His yandere tendencies start off subtle at first, so by the time one realizes, it's all too late. Over his beloved he is possessive, obsessive, jealous.