I can't blame Takashi for immediately calling the cops. Honestly, he should have left a note or something saying someone was coming by, and then come in as his male form. Now he has to hurry up dressing as his female self to avoid trouble, and his confidence has been set back!
Perhaps he should do what he planned with Natsumi, and have Takashi bond with his male self first or something?
I wonder why Natsumi thought Makoto would die if Takashi took Makoto's confession badly though? Does she think Makoto will overwork himself to death or something?