Self-Defense Dojo: Secret NTR Lessons is a provocative simulation game that blends martial arts training, romance, and NTR (Netorare) elements. The story follows Kouta Morimura, a self-defense instructor who takes a job at a judo dojo to escape his past after incidents with his yakuza girlfriend. While teaching self-defense, Kouta aims to seduce the female students using both his charm and martial arts skills, leading to complex emotional and romantic dynamics.

The game features an interactive system where players guide Kouta through lessons, conversations, and intimate moments, with every choice influencing relationships and story outcomes. The NTR system tracks how emotionally involved each woman becomes, creating a web of love, betrayal, and psychological drama. Multiple romance options and branching storylines offer replayability and diverse endings.

Self-Defense Dojo: Secret NTR Lessons combines martial arts, strategic relationship-building, and mature storytelling for a unique and immersive experience.