RE: Hello! This is my first post!
Welcome to Steemit @chiakichi! Your English is quite good and that will help you grow your audience here on Steemit.
Quick note of advice, you may want to change your "japanesegirl" tag to "introduceyourself". The introduceyourself tag is the the most commonly used tag for introducing yourself.
Please see Yoshiko's post: https://steemit.com/japanese/@yoshiko/i-made-a-manual-for-japanese-beginner
There is also a Japanese Discord server here: https://discord.gg/k6vZeNe