1 The lesson
Everything is built from the one reading article, so the vocabulary is the words in it and the grammar point is a pattern it actually uses.
2 Topic
Anything you paste here is the only place numbers may come from.
3 Edit
Click any Japanese line to jump the preview to it. After editing Japanese, press Apply so the furigana is redone.
4 Make
Mobile — Reels & Shorts
YouTube — one long lesson
Recording runs in real time and the tab must stay visible. Silent preview costs nothing — use it to check pacing first.