Pretty sure that's a candle. (For melting hot wax onto Gamagoori) But I like the firecracker idea better.
Hi, I'm Mankanshoku Mako, welcome to SMAss. *Corona starts playing*
Updated
You're wrong...???..NO, YOU'RE WRONG!No! You are!Mankanshoku...Manakanshoku...I'm already...at my limit..Mako has a thought! Senpai is restraining himself for Mako!Gamagoori-senpai!Because if you watch episode 8, you expect that Senpai likes this kind of play!Here?!Here?!..Sto..p...Sto...Here?!Here?!Mako! Is finished with the preparations for giving senpai pleasure!... not really...Here?!I don't want to force you to do that sort of thing... j-just doing it like this together with you, makes me happ-Then!W-what are you going to do!? Stop this Mankanshoku!I'm only imitating what I've seen, but! Let's start!Here?!Here?!Uwaaahhh! Stoooop!Mankanshoku!Hallelujah!Whaaat?!What is this! When did you!