Thank you for your reply. I've used a rom corruptor and around 80000 there's the compress font.
The font has the japanese alphabet, but also the english one. The only missing character is the apostrophe '. But it has something simillar, lile a circle. i've used that for the moment. Another problem is that the game uses 2 fonts. The second font it's used only after you beat the octopus. There the letters from P to Z are replaced by waves.
Also i need to edit the graphics in the title screen, bonus area and level names.