Yeah. Touma's the one who ultimately got me to stop. [he is not elaborating]

Anyway, I hope you aren't conveniently forgetting that Hatter was my target before yours. In exchange for Rika's safety, I had agreed to brutally kill someone for Hatter while Rika watched. He fucked me over by having that person be one of my best friends. She would have been killed if I hadn't killed Ion then and there. For making me rip apart one of the first people I ever learned to trust and losing my mind in the process, I want to make Hatter suffer.

Rather than arguing about entitlement rights, it'd be more productive to come to an agreement we can both be satisfied with.