Do you know how people of your target language do things differently in casual text messages/on the internet?
A good example: russians often drop the double dot from smiling face )))) vs. :)))) or how in some middle-eastern languages they write hhhhhhh instead of the “hahaha”.
For the OP’s question, I see Japanese tweets (on bsky) write words using these small width characters like ｸﾞand ｷﾞfor emphasis and effect. That and they more often use those long emoji things like (( °ω° ))/
In Spanish, I’ve at least seen that people use jajaja instead of hahaha.
Japanese tweets always look so interesting, i feel like there is so much to their internet culture! And yeah the Spanish J sounding like H makes this funny to someone learning German :D