You crack your knuckles as you come to a decision. Heh, like there was really any choice. These things thought they could hurt Madoka and for that they're going to die. You grip the handrail of the balcony with one hand and leap over it. Rather than merely dropping down though, you keep hold of the handrail and plant your feet on the outside edge of the platform. You bend your knees, coiling up like a spring, before letting go of the handrail and launching yourself head first at the largest cluster of monsters.
You roll as you hit the ground to bleed off momentum. Before the creatures can even react to your sudden entrance you're attacking, disintegrating the things with a single punch or kick each. It doesn't even take you a full second to get rid of the group. With that done you pause to survey the battleground. The girls are staring at you now, even the blond one but she recovers quickly and returns to firing upon the beasts. More importantly the creatures know you're here now. A few of the ice cream cones closer to you begin to slowly float in your direction. You dash forward and destroy them before moving onto the next targets.
Between your ferocious assault and the blonde's pinpoint marksmanship you dismantle the horde in a matter of seconds. As you kill the last of them something happens. You feel the sick feeling lessen and the world seems to melt away, leaving you standing in the concrete building you were in before. You can sense the corruption moving away at high speeds. Seeing that the danger has passed you straighten up out of your fighting stance and face the girls, taking in their reactions. Madoka simply looks relieved, probably thankful to be out of that nightmare. The magical blonde is looking at you with what is likely cautions optimism. The blue-haired one though… You have no idea what expression she's making. She's staring at you with wide eyes as though she was afraid of you but she's also smiling. She looks like she'll break out into a full on grin any second now.
The blonde one speaks up. "Hello. My name is Mami Tomoe. I'd like to thank you for your aid against those familiars. And you are?"
[] Introduce yourself?
-[] Full name.
-[] Just Tatsuya.
-[] Don't give your name.
What do you do now?
[] Stick around.
-[] Act helpful. Make sure the girls are safe and uninjured.
-[] Act friendly. You think you remember how to smile. You just need to show your teeth, right?
-[] Act inquisitive. What was up with that place? What were those creatures? How can you use magic?
-[] Act honestly. Tell them you story, all of it.
-[] Act mysteriously. Answer any questions they may have for you but don't tell them too much just in case.
-[] Don't act at all.
-[] Write in
[] Leave.
-[] Get some distance but then follow them discretely.
-[] You should really get around to figuring out how your magic works.
-[] You can still feel the corruption of that labyrinth moving away. Hunt it down and try to destroy it.
-[] Just wander around the city. Maybe you'll find something interesting.
-[] You can sense another power nearby, like Mami's. Confront it.