We sneak into girls' houses! We have to keep the moaning sounds secret from mom!? The moaning sounds that spill out unintentionally along with the sighs! "Shh! If you make sounds like that, mom will find out." The uncontrollable students cum in earnest while trying to hold back their voices! Three students are included: Tsubomi-chan, a pervert with beautiful breasts; Rina-chan, a pervert with a bright personality; and Kana-chan, a shaved, small-breasted loli girl!