Because KISS is the most popular foreign band in Japan. For whatever they really bought into their specific flavour of glam rock, to the point most Jap rock bands are directly or indirectly inspired by them. Just loop up any random J-metal band. The chance of them having facepaint and glittery costumes is over 50%.
The Japs probably can’t differentiate between most subgenres of western rock, so they probably just associated the British punk scene with KISS because of the vaguely similar aesthetic (leather, spikes, wild hair, etc)