I've specified where I've corrected in your program.
Could you download 5KA8X5DF and search "modified" in downloaded program?
Please download it asap because I'll keep it on the cloud server temporarily.
I've corrected just evident mistakes in your program.
Could you download and refer to 82NQ834J?
For example, an object is sometimes earlier than a verb in Japanese.
In current case, "にほんごを まなびましょう" is better than "まなびます にほんごを".
I recommend you to write here what do you want to know about Japanese one-by-one. Japanese SmileBASIC users like me may answer your questions.
But please don't expect our quick responses because we're not so good at English.
Let's try my games, too! Download keys are as follows.
CACQ33L4: aircraft landing simulator
JEE3V3NE: samurai sword action
Y33NQ54S: wandering around the maze
VKAKV3ZP: car racing game
DSEEX3QJ: supersonic kite racing game
DEEE33Q4: simplified golf game