Prepare for a full dive!After their battle with the Acceleration Research Society, Kuroyukihime and the other members of Nega Nebulus have finally resolved to face the White Legion, Oscillatory Universe! To have a fighting chance against White Cosmos, Nega Nebulus knows that forming an alliance with the Green Legion is paramount. So after scheduling peace talks with the Green Legion's Master, Green Grandï¿½, Haruyuki travels to their home base, located in the Shibuya Ward. But when he arrives, he discovers that the one awaiting him is none other than...Kuroyukihime in a swimsuit?!