The size of letters too small to read in some descriptions in Japanese.
Probable Cause
In the Japanese language, people write sentences without inter-word separation like space. For example, there are 10+ words in the following sentence, but there are no spaces.
風力発電機の羽の形状をこの星の大気に適合させることで風力発電所の距離を縮めることができます。
So, the game cannot find spaces for a line brake.
Suggestion
It is general grammar in Japanese to start a new line anywhere, even in the middle of a word. Could you like to allow the game to start a new line anywhere when the Japanese language is selected?
Note
Maybe the same issue occurred in some languages having no inter-word separation like Chinese.