- Once caused a fight between Artemis' mom and Jaehyun's mom, over who is her Eomma
- Can drive both a car and motorcycle but also a bus and boat
- Scares RM Entertainment artists at night by playing 'creepy' songs over the speakers
- When focused on something she sings complete songs even around other people
- If someone comes up behind Serenity and scare her there is a chance that they will be hit in the face
- Was hit in by maids in a maid cafe while in Japan, still happens
- There are certain restuarants throughout Asia that never let Serenity pay, even when she tries, and always get excited seeing her
- If asked about Jaehyun while distracted she will reveal unkown things about him
- Knows many secrets about other idols and celebrities
- The amount of times she has run out of the bathroom because of walking in on Jaehyun in the shower
- Jaehyun has made it his life goal to fluster and tease Serenity in retaliation for the teasing she's done
- Groups have fought over Serenity's cooking, NCT are jealous over Jaehyun
- Can get into anyones phone and has snooped on them
- Has a private folder on her phone full of pictures, videos and gifs of Jaehyun, reason she won't let anyone on her phone
- Can't swim and has nearly drowned multiple times
- Has only ever had one nosebleed in her life and it was due to over working
- Is always biting and sucking on things like pens, fingers etc. because of having an oral fixation
