Sakura Agent

Akira serves as an agent for a clandestine organization, protecting his world from interdimensional threats known as Incursions. Strange creatures from another realm ravage the land, and only Akira, his assistant, and a rookie can stop them from ending civilization. With a single ending, brief branching, and good endings only, this action-packed visual novel features combat with firearms, a fighting protagonist and heroine, and a harem ending. The protagonist has prior sexual experience.