Summary
“Relationship Principle” (also known as Love Caution or 연애 주의) is a mature, josei-style Romance/Drama/Smut manhwa written by Yoanna and illustrated by Boru (ongoing since 2025) .
Na-yoon, who finds herself in an unexpected situation while helping a friend confess their feelings. Instead of playing matchmaker, she ends up receiving a surprise confession from the popular and charming Do Seol-woo. Though momentarily flustered, Na-yoon believes love is a luxury she can’t afford and turns him down