"It's only for a short while, but please take care of me." While his parents are away on a trip, Hiroshi is asked to look after his mother's best friend, Anza. The teenage Hiroshi is captivated by her overwhelmingly stimulating and heavy breasts. If he misses this chance, he might never meet such a wonderful woman again. Unable to contain himself any longer, Hiroshi is driven by lust and uses Anza's underwear as material for his desires. However, unluckily, he ends up bumping into Anza...
