Daisuke Minamizawa sells his official scores (楽譜) on Japanese platforms like BOOTH (pixiv's marketplace). You won’t find them on Ultimate Guitar. You will find a PDF titled "Minamizawa Daisuke Solo Guitar Score Vol. 1" for about 1,000–2,000 Yen.
Legend: Play the open strings while tapping the 12th fret harmonic with your right-hand middle finger. The thumb slaps the low D string on the downbeat. If you truly want to learn Daisuke Minamizawa, stop looking for a text file. Open YouTube, slow the playback speed to 0.5x, and watch. daisuke minamizawa guitar tab
The tabs are out there—you just have to buy them from Japan or earn them by training your ear. It is a rite of passage. Good luck, and don't break too many high E strings trying to tune up to his weird open C# tuning. Daisuke Minamizawa sells his official scores (楽譜) on