Boss Tricks: Yakuza

Notes:

Fire missiles upward to damage yakuza before the fight starts. You must make sure to scroll the screen upward or else the missiles won't hit.
You can skip one round of yakuza crawling around if you get grabbed early and break out quickly by mashing left and right. It's not easy though, and it'll only save time if your mashing is extremely fast.
When he starts space jumping, predict where he'll jump and hit him with a missile very early. This is much easier said than done.
Alternatively, you can use charged wide beam shots between each of his space jumps, which is easier, but slower than an ideal missile strat.