This one doesn't try to relaunch anything. It catches up. Years after the Borgman team disbanded, Ryo is buried in rocket science, Chuck Sweager is doing police work like a normal man, and Anise is still the reason Ryo answers the call, and then an army of the undead shows up to drag all three back into the suits they thought they were done wearing. That's the hook: the fights land harder because these people already retired once and know exactly what going back costs them. "Lover's Rain" is a single OVA that spends its runtime on the trio's history instead of world-building, which is why it plays like a reunion with a body count rather than a franchise obligation. If you came out of the 1988 series wanting to know what happened to those three, this is the answer, and it is not a soft one.
Years have passed since the Borgman unit disbanded, and its surviving members have moved on with their lives. Ryo, a brilliant rocket scientist, has built a quiet existence with his girlfriend Anise, while their former partner Chuck maintains his work in law enforcement. Their peace shatters when an army of the undead emerges without warning, driven by a hunger for chaos and bloodshed that threatens everything they've rebuilt. Drawn back into action whether they want it or not, the three former soldiers must confront both external threats and the emotional weight of returning to a life they thought they'd left behind. Ryo struggles between protecting Anise and embracing his combat training. Chuck grapples with his dual identity as a cop and a bio-enhanced warrior. The reunion forces them to reckon with why they disbanded in the first place while facing an enemy that won't stop until the city burns. This blend of sci-fi action and intimate character drama catches the tension between personal growth and the pull of your past, anchored by genuine relationships rather than heroics alone.