Drama Special Season 10: Socialization – Understanding of Dance (2019)

both had the "extremely" tall female lead, and "extremely" short male lead that end up partnered together, which adds to their self consciousness, and the story follows them as they try to grow

the main plot for both dramas involve dancing. and they also use dancing as a way to express their true selves, while it also connects the unlikeliest people in beautiful friendship

Socialization – Understanding of Dance is a drama special about two misfits who pair up and start dancing.

Yuwol: The Boy Who Made The World Dance is short student movie also focused on a one special boy who loves dancing.

Both have the same message: Dance like nobody's watching!

Both dramas feature a main female lead who doesnt feel comfortable in her own body.

FL in Socialization is too tall, FL in WFKBJ is too strong. Both are athletes. Message is similar in both: Learn to love youself.

Both titles are about pure unadulterated love for tap dancing.

Socialization is a 1-hour-long drama special set in current time. Main characters are university students.

Swing Kids is a feature movie set in korean war. Main characters are prisoners of war.

Both are "feel good" mini dramas. In To. Jenny ML teaches FL how to play guitar, whereas in Understanding of dance ML teaches FL how to dance without being embarrassed.
Really cute dramas, both of them.