Rika is the leader of the first squadron in the prefecture police and an expert sniper within the Special Assault Team, tasked with clearing out any lingering zombies at a nearby airport. She shares a close friendship with Marikawa Shizuka and harbors a strong desire to rescue her from the zombie outbreak. Unbeknownst to Rika, Shizuka and others had stayed at her place and fled using her Humvee.
Trapped in the same airport, Rika remains alongside surviving passengers, Special Assault Team operatives, Special Security Team members, airport security guards, customs officers, and firefighters, all working together to eliminate the remaining zombies. With assistance from her partner/observer, she utilized jet fuel from a tanker to incinerate the undead horde.
Shortly after, Rika received a brief phone call from Shizuka before a massive blackout occurred due to an EMP surge that disrupted all communications and disabled vehicle engines. Since then, Rika has not been seen or heard from, leaving her fate uncertain following these events.
