Undertale makes a surprise appearance too:
097. [NSW] Undertale <RPG> (8-4) {2018.09.15} (¥4,000) - 35,493 / 93,337 ([i]+127%[/i])

(The game did appear on the list of Japan's favorite games at the beginning of 2022)

The full top 100 has been uploaded.

The best selling game was Pokemon Scarlet / Violet. The #100 game was Xenoblade 2:
100. [NSW] Xenoblade Chronicles 2 # <RPG> (Nintendo) {2017.12.01} (¥7,980) - 33,871 / 303,578 ([i]+72%[/i])