I only do so as a matter of self-defense. Do you remember the ghost and slime event that passed recently? Hajime here got covered in slime; he tried to kill me and he had half the kitchen try to kill me. The explosion was to protect myself.

I'll confess to blowing up the tailor's during that event, but it was to save a man's life and prevent the haunted materials from strangling him to death and ensure our escape. The building was empty before I blew it up.

(She's making YOU the bad guy, Hajime. You're clearly the bad guy here.)