Online!, Vol. 5: Mr. Three-Sevens and Delori the Hydro-Fiend

Mai and her friends spend day after day playing a game. But not for fun—their lives are on the line! After fighting against eerie enemies and successfully completing game events, they finally feel like they are nearing the end of the game. They'll work together to clear it and get their normal lives back! But there are still many trials, challenges, and battles ahead of them. And this time the boss has....THREE transformations!?