The first category: Chinese characters barely serve Sichuan cuisine.
Category II: Hiragana さくらわたし
Category III: Katakana ィラクマィクロソフト
The fourth category: Roman characters Ito Yokado, Japan
For China people, it is mainly difficult to write Hiragana and Chinese characters different from those in China. For example:
The word "map" on the map is written as "Yao Yao" in Japanese.
Hiragana is mainly strokes. It looks complicated, but it's not complicated when you get used to it.