It's summer!! Speaking of hot summer, this is already the season to fight!! So, here is the best of SOD's representative work "Yakyaku-ken"!! From SOD female employees to street corner ladies, Miss Campus, and big-boobed AV idols, there is no shortage of opponents for Yakyu-ken!! As they are stripped off one by one, the girls' faces will be flushed and your crotch will surely be expanding!! A fierce battle!! The summer's big Yakyu-ken tournament is underway!!