Vampires exist. It is the duty of Hellsing, an organization sponsored by the British government, to hide that frightening fact and protect the blissfully unaware populace. Along with its own personal army, Hellsing also has a few secret weapons. Alucard, an incredibly powerful vampire, has been controlled by Hellsing for years. Although he dislikes being a servant to the Hellsing family, he certainly enjoys his job as Hellsing’s vampire exterminator. Seras is a fledgling vampire and a former police woman. Although reluctant to embrace her new self, she is still a valuable member of the organization. Integra Hellsing, the current leader, is usually fully capable of fulfilling her duty, but lately, vampire activity has been on the rise. Unfortunately, the cause is more alarming than anything she could have imagined...

Tokimeki Memorial brings together the twelve young girls from Kirameki High School, but revolves around the main girl, Fujisaki Shiori. The story starts at the beginning of the third school year, which is the last year before the main character can choose a girl and date her at the graduation.

Most teenage boys have enough trouble just dealing with the pressures of school and dating, but 15-year-old Aoi Mitsukuni's life becomes exponentially more complicated when his mom returns from a long "business trip." He discovers that not only is his beautiful mother actually an alien, but she's the notorious Space Pirate Mito to boot! To make matters worse, the girl Aoi likes at school is actually a secret Galactic Patrol agent attempting to find and arrest his mother. No one ever said being a teenager in love was easy!