The president of the "Astronomy Club", Di Qiuren, leads the members of the club to track down aliens, but they have been unsuccessful so far. What Qiuren doesn't know is that all of the members are aliens. On one side is the alien stalker who never gives up, and on the other side are the aliens disguised as members of the astronomy club! In order to conceal their identities, the aliens try to learn and understand the behavior of earthlings. A funny school life with them and Di Qiuren is about to unfold.
 
(Source: bilibili, translated)

The third season of Wan Sheng Jie.

The second season of Wan Sheng Jie

The pure and cute little demon Nini lives in Unit 1031 of All Saints Street Apartment. His roommates are no ordinary people: The lazy and wacky vampire Ira who spends most of his time gaming or watching TV, the unlucky dancer werewolf Vladimir, the serious and old-fashioned angel landlord Lynn and his naive little sister Lily, and many more. 
 
What none of them realize is that within Nini sleeps the power of the demon king. With evil forces in hot pursuit, can Nini and his friends head off disaster? (Source: QQ, translated)

Observatory Animation