* MY MY, THIS IS THE SADDEST DISPLAY I'VE EVER SEEN, DARLING!
* THIS ARTICLE IS NOT UP TO THE
Drug and Mature Language are included in this AU. Do not continue if you are sensitive to themes of this nature.
Under Sleep (睡眠之下) is a Chinese AU which everyone has suffered from sleeplessness and unhealthy life manners. Due to its strong relationship to Chinese Internet culture, it features many Internet memes.
The Human uses their adventage of being active at night to constantly annoy Monster in order to gain victory. Because Monster are strictly following their life routine, their health are damaged by Human's annoying and eventually lose the battle.
The way of killing Monster is installing high-power acoustics and using their loud sound to make Monster's soul break. However, Human's soul can be damaged and even destroyed by loud sound too.
Frisk is living alone in the mountain and is accidently falling down one night. She is addict in mobile phone but she still has self-control to prevent herself to play it too long.
Chara is suffering from serious sleeplessness and she uses anaesthetic to help herself go into asleep. She dies of too much anaesthetic englobing.
Flowey is a flower which has the ability of shooting "Somnificant Bullet" with high caffeine content. He seems not sleeping well.
Sans is Papyrus' elder brother and addicted to sleep. He will use pillow, quilt and hypnosis cannon in battle.
Papyrus is Sans' younger brother good at hypnotism and he is still kind, innocent and energentic as his appearence in Undertale.