Unable to go to a love hotel because they have no money. Male and female students in their prime, wanting to have sex, are overflowing with sexual desire. So, the 'late-night classroom,' rumored to be the best place to have sex, is used as a sex spot. It's said that couples visiting the late-night classroom with that intention have a 100% chance of intercourse (success)... However, they need to be careful of security guard patrols. Students secretly and slowly explode their sexual desire as long as time allows... Furthermore, it seems that female teachers are also secretly doing lewd things with male students in the late-night classroom... The late-night classroom, with an atmosphere completely different from daytime, has something that makes people bold!
