[Instrumental Cover] [Preserve the original melody, koto sound, rhythm, structure, section lengths and overall momentum] [Do not replace or rewrite the original main hook] [Add a soft rounded electronic bounce sound with a quick downward pitch dip and an elastic upward rebound] [Use each bounce as a pair: one lower rounded note followed by one slightly higher rounded note] [Opening Groove: keep the original arrangement, add one small bounce pair between two koto phrases] [Main Hook: preserve the original hook without continuous bounce sounds] [Post-Hook: add two clearly separated bounce pairs between the rhythmic phrases] [Push Transition: compress the original sound briefly, then add one low-and-high bounce pair immediately before the full arrangement returns] [Soft Section: preserve the delicate koto section with almost no bounce accents] [Final Section: retain the original climax, add two stronger bounce pairs around the final transition without covering the koto melody] [Outro: preserve the original ending, finish with the koto motif followed by one soft low-and-high bounce pair]