Orgel Seira

Japanese name:

星来 オルジェル

Seira is the main heroine from Takumi's favorite anime "Blood Tunes the Animation", and also Takumi's favorite character. Occasionally, she shows up in Takumi's delusions, trying to deviate him from reality and push him to be a shut-in. Her delusional appearance is in fact Takumi's own weaknesses given voice.

Voiced by: Akane Tomonaga

Wikipedia