Zenhee

Zenhee is the het ship between Hyun Ryu and Jaehee Kang from the Mystic Messenger fandom.

Canon
On the casual route, they talk on the messenger sharing friendship and appreciation. On Yoosung's route, they continue being great friends. On Zen's route, they are also friends, but Jaehee gets distant because of MC's actions.

Although, on Jaehee's route, they seem to be really close, especially when Jumin gives her more work and Zen gets pissed. They start hanging out, sharing gifts and, it is during her route that we see the most famous quote from the ship: "I will be your number 1 fan".

On Deep Story and Another story, they continue as friends.

Some of the characters assume that Jaehee likes Zen as more than just a friend, but she always denies it by saying that she's just his friend and a fan.

Zen doesn't seem to be romantically interested in her on other's route, but on Jaehee's route it's really visible that he cares about her deeply.

Fanon
The ship isn't that popular due to the fame of JuZen (Jumin x Zen) and Jaehee x MC. On Wattpad, there are only a few stories about them. The most famous one (based on the number of reads and kudos) is "Cooking With Love," a bunch of Zenhee one-shots. The artist makes most of the fanarts of the ship.

Fandom
FAN FICTION
 * Hyun/Jaehee on FanFiction.Net
 * Hyun/Jaehee on FanFiction.Net

Trivia

 * Zen didn't think that Jaehee was his fan at first.
 * Jaehee has a fangirl account.
 * The spaceship reveals that Jaehee has a photo of Zen on her mouse pad.
 * Since Jaehee's route ended up with her and MC being 'gals being pals', a lot of shippers consider that sometime after the events Jaehee and Zen actually end up together.