D_Cide Traumerei the Animation (2021)

S1E3 Fake Friend!

A "knocker-upper" is a person who can eliminate the eerie creatures that emerge from nightmares. When Tris learns that Reina possesses this unique gift, Ryuhei approaches her for assistance in uncovering the truth behind his brother's death. He suspects that the rumored Somnium Drop candy in their town and the signs of a strange incident are connected. Meanwhile, Reina, who enjoys a significant following on social media, finds herself facing unforeseen complications.