Chizuru is dangerous only if you misbehave, or do something that might upset her, which means Tomoya-kun should not get near her XD
or Osmo for that matter XDD
The bracelet thing was also in the manga, but it never got translated.
There is something odd about this show in this episode. the Audio doesn't seem like it used to be, I am seeing Ika Musume and the gang being fun, but the audio is like it was done in the late 80's, or pre-2000 at least, you know, the older anime shows had some serious audio, not so cheerful. Like Kokoro Library or pre-2000's.
Might just be me, but compared to episode 1 and season 1, the audio is livelier, while in this one it's not so lively.
Hope it's just me or a tthe worst it's just this episode, or the raw was very terrible with audio (going to check HS and fffpeeps about this)