The emote "ξ(✿ ❛‿❛)ξ▄╦̵̵̿╤─̿̿ ̿̿" is a representation of a person with their fists raised in a fighting stance. The phrase "She's like Gasai Yuno" refers to a character from the anime and manga series "Mirai Nikki," known for her obsessive and violent behavior towards the protagonist. Both the emote and the reference to Gasai Yuno are often used in online discussions to convey a sense of determination or intensity.