Rakuraku app - Learning Vietnamese for Japanese people

We have prepared various contents with the motto of having everyone learn Vietnamese "fun" and "easily".
Native teachers will bring you Vietnamese useful in real life!
Those who have applied for "Easy Vietnamese Online Course" can take the online course with this app.
I regret the blog that introduces Vietnamese culture for free. Please download it once and read it.

Here is the link of application:
https://play.google.com/store/apps/details?id=com.raku