I have also played the game...

In my impression, it is indeed called "Kung Fu". I stand on a pillar, have no clothes on in the first level, and hit colored balls that fly very slowly. , in the second level, hit fast flying balls, and later hit all kinds of strange things (paramecium, single-celled organisms, etc.). Rewards include clothes, belt color upgrades, etc. The last level of Ribbon is about hitting the planets in the solar system. The BGM is Canon. I have never passed the level. I've been looking for this thing, but can't find it. I hope lz will let me know if she has any clues