Both male leads are from wealthy family. They somehow live with female lead, hide their identity. The Japanese one more serious and beautiful cinematography. Soft tone and gentle watch. Chinese one female lead acted like dumb and not realistic.

Both are Korean movies involved married woman, have secret love affair with another man. Sizzling sexual encounters. Strong feeling

Both movies has “Lust” infidelity. Wartime movies. Love affair. Feeling growth. Forbidden love. Beautifully filmed. Sexual content.

Both are war movies. Both are about stranger saving stranger. War is sad, war is brutal. Bromance. Hardship. Taking care of another human

The plot are about the same. Ji Sung in both drama, one was second lead one was main lead. Both partially filmed abroad. Both has gambling genre. Both has romance

Both are about literatures preserve. One is historical beginning, creation of Korean letters and words, the other one is about Japanese Dictionary they both have certain similarity.

Both are historical Korean drama involving letters. The beginning of letters, words and books. Great watch.

Both has to do with Korean letters Both went through hardship to preserve the letters and future literatures

Some story, same drama. Chinese one even found female leads that look a little bit like the Korean original one, LOL.

Both are Korean films involved with train skilled agents. Both main leads fell in love and has feeling to each other. If you like action, romance , suspense drama. iris has drama as well as movie

Both movie involve a security agency either government or private, skilled trained organized personal. Mission, action, intense movies

Both are very intense action suspension film. Very obvious villain and good guys. Protect beautiful female lead.