After the successful passing of the idea for gender integration, Okonogi Masaya finds himself at a loss for what to do in his free time. When he hears a little titbit from a friend, however, that changes. A new pastime appears for him. "It's called Sword Art Online..."

Based on the most successful mobile game franchise Heroes Lore Zero, ride with Lucian as he uncover his fate! Will he make the right choices? Whom will he trust? Can he save himself, his family, or the whole Erikboise? Will he turn back? Or accept it? Witness the rise of the Crimson Zealot! [Heroes Lore Zero x Sword Art Online Crossover]