How to use んだ and でしょ.
んだ was covered in a video which I posted last week:
https://mstdn.io/@codewiz/110126689603027820
#japanese
Yes, I'm watching the second episode of Tengoku Daimakyou, and paying attention to how they say 僕 (boku).
It seems both boys and girls use "bòku" rather than the raising-flat "bokù" used by adults.
Sometimes Maru switches to 俺 (orè)...
Often when he's speaking seriously to Kiruko-oneechan.