"It's possible that you're eating away Tarou's life."
No Ibusuki, it's you.
Having his childhood friend suddenly come back to him only to destroy his decent life in the name of vengeance. Purposely make his life suffer, shitting on him when he want to help, lying because "So embarrassing, cant tell him. Better run away!" then got mad at him because he didn't understand what actually happened. As if having imaginary girlfriend and seeing half naked girls everywhere aren't stressful enough.