Both Sweet Tooth, Good Dentist and Fish Upon the Sky are based in a university setting with one of the main characters being a student in the Faculty of Dentist.

RE:VERSE uses VR headset to transport into a virtual world named 'W' in hopes to create a 5 member K-Pop virtual group through VRChat. 30 contestants compete who are already members of girl groups in real life, in hopes to debut in the virtual world as well.

-Both dramas are Thai dramas by GMM.
-Both are based on a Twin and one of them goes missing
-Both dramas has Namtan as a cast member

I think the vibes of these two dramas are quite similar to each other, both are GMM dramas as well. Both dramas are lead by a female lead and two male leads.

My Teenage Girl is an MBC survival show, it is recommended that you watch it's pre-equal show 'Hesitation Before Going to School' which is a show for the 1st elimination period. The concept is similar to Girls Planet 999 with the groups but instead in My Teenage Girl the girls are separated into Grades based on their ages. The show has 40 contestants and during this show they aim to create a global girl group that will chart on the Billboard Charts.

Hesitation Before Going to School is a MBC and NAVER pre-equal survival show for the survival show My Teenage Girl. The concept is similar to Girls Planet 999 with the groups but instead in Hesitation Before Going to School the girls are seperated into Grades based on their ages. The show has 84 contestants and during this show they will eliminate 40, this is classed as the first elimination round. The 40 will then proceed and go onto My Teenage Girl

Very similar concept to Imitation. In Imitation, OMEGA X is an underrated group about to debut but their debut was cancelled. They instead debuted as TEA PARTY under another company and gained popularity. There are 4 artists in Imitation, TEA PARTY, SHAX, SPARKLING and LA LIMA. SPARKLING is supposed to be an underrated group. TEAPARTY is a group from a poorer company but manages to get popular regardless. SHAX is a 6 year old successful group. LA LIMA is a solo artist having problems with her management company.

Both are ghost BL stories. A boy can see a ghost and he is the only one that can see him. The same with He's Coming to Me.

Members of KQ FELLAZ: Hongjoong, Wooyoung, Mingi and Jongho were contestants of MIXNINE. To get to know these members more, i suggest watching MIXNINE.

'Stray Kids' first reality show which stars the winners of the 'Stray Kids' survival show created by JYP ENTERTAINMENT. Kim Woo-jin, Bang Chan, Lee Min-ho, Seo Chang-bin, Hwang Hyun-jin, Han Ji-sung, Lee Felix, Kim Seung-min and Yang Jeong-in to star in this new reality show.