It’s love at first sight for Fudo and Desumi, except it was during a battle of life and death. Fudo, leader of the hero squad Gelato 5, and Desumi, the Death Queen of the evil society Gekko, have found themselves caught in a forbidden love—and it’s their first relationship! Moving in secrecy, they live holding hands with one weapon in the other, finding out what’s truly fair in love and war.
Deep in Gekko headquarters, the birth of the Ultimate Phantom approaches. Meanwhile, a commercial opportunity for Fudo earns him Desumi's ire. When Gekko's ambitions lead to a world-threatening crisis, can the couple make up in time to fight back?!
Desumi learns that her laid-back coworker, Steel Princess, is in love with a coworker. While Beast Princess insists that dating within the company is against the rules, Desumi swears to help Steel Princess land her heart's desire!
Haru invites Fudo to lunch to try to ask about his suspected girlfriend. But when Desumi spies them together, she can't help but feel shaken... a feeling that soon shows itself on the battlefield!
Fudo Aikawa, who doubles as leader of a heroic Sentai team, Red Gelato, and Desumi Magahara, who doubles as combatant leader Reaper Princess for an evil secret society, have fallen in love! Can these two mortal enemies keep their relationship secret while their organizations fight in the background?!
Desumi invites Fudo to her high school culture festival, where they hope to have their picture taken atop the "Kokutei Moon." But complications abound, as members of Gelato 5 and the Princess Series alike seem determined to foil the couple's best-laid plans!
The masked Judgment Princess always eats on her own in the cafeteria, prompting Desumi to take interest in the solitary girl. But her invitation to the rest of the Princess Series to have a strategy meeting in her room turns out to be... a slumber party!
Desumi learns that she's going to be promoted to monster executive, and ponders what this might mean for her life going forward. Meanwhile, their planned date to the beach happens to coincide with Gelato 5's robot testing...
Desumi's father arrives to interrupt the couple's alone time, bringing along Desumi's little sister, Urami. Both of them seem to disapprove of Desumi's recent life decisions. With Fudo's help, can she make her true feelings known?
Red Gelato and Reaper Princess pretend to run off to have a duel to steal some alone time together. Desumi asks Fudo to take her on a proper date, but Fudo has no experience in the matter! Can his comrade Yellow Gelato offer him some good advice?!