Ok so i tried to figure out what is the fastest language for the game as they are 11 available and this is what i found: You can spam a button to skip textboxes quickly but it's longer if you have more textboxes.

So step 2: Count the textboxes in all languages. Here it is:

• Korean: 128
• Japanese: 149
• Russian: 152
• English: 154
• Portuguese: 157
• Simplified Chinese: 157
• Traditional Chinese: 159
• Spanish: 161
• Italian: 164
• French: 166
• German: 174

These numbers are for the Any% route. They don't count textboxes in shops, but it's always 1 textbox for buying an item and 1-3 for saying hello to the merchant (will not change the fastest language even if we go on all shops).

For 100% we only speak to a few more PNJ to collect items so it will not change the fastest language.

By the way this will not save a lot of time but it's speedrun you know ;)

Thanks to Mugwort for helping me counting all this.