This series is simple.The main line is nothing more than giving away all kinds of sexual intercourse and committing sexual misconduct. Anyway, there is a system for the male protagonist to protect him, so he can be a fool of himself.Each chapter is basically a lewd story.If you divide the line, it means that the male protagonist becomes lovers with the woman and finally gets married.There may be a character who trains the heroine for a long time (not sure, so I hope to have a yellow-haired name) and ending, it will definitely be good (probably), after all, there is a male protagonist's mobile APP that can be modified at will.The taste will get heavier and heavier in the plot (not R-18G), and the main line will definitely be cuckold.