Sakurano Yuki, the strongest underground fighter, also known as “Princess Burst Yuki”, is a hard worker who supports her family (or people like her) in the orphanage where she grew up with her fight money. Then she is scouted by the legendary “King” in the industry. For the sake of her family (or people like her) in the orphanage, and above all to become the strongest, Yuki faces King in a match. However… “You screwed me.” The match with King was essentially a show where the loser would be violated by King in front of a large crowd as a penalty. Yuki’s face is twisted in frustration as she sucks his penis, and she loses her virginity in front of everyone. Furthermore , Yuki is stunned when King reveals his true purpose. Underground fighting with no rules, anything goes. Due to the lewd penalties imposed on the loser, Princess Burst Yuuki’s mature body is stained white in front of the huge crowd…