Saku Chitose appears to lead an enviable high school life. Extraordinarily charismatic, tremendously confident, and effortlessly friendly, he is the kind of person others naturally look up to. But his popularity carries its own burdens; not everyone views him kindly, and whispers of cynicism follow wherever he shines too brightly. To Saku, living an ugly life is worse than death—a belief that drives his need to maintain his perfect reputation. At the start of his second year, Saku's homeroom teacher asks him to help bring back a classmate who has stopped attending school. Initially hoping to resolve the matter quickly, Saku finds out that the shut-in Kenta Yamazaki harbors open contempt for him and everything he represents. A simple favor instead exposes the distance between those who live within the social light and those who were never given a chance to shine. Surrounded by the expectant gazes of those who both admire and despise him, Saku treads the delicate line between sincerity and performance—searching for what it truly means to live beautifully in a world that sees only the surface.

As a vampire, Luna Ishikawa can be considered a unique transfer student. With her cool demeanor, she has quickly become her class' center of attention. Normally, it would be nearly impossible for Tatsuta Ootori—a completely average guy—to ever interact with her. However, this changes when the two are unexpectedly paired together for cleaning duty! After Tatsuta spontaneously forms a friendship with Luna, his impression of her slowly crumbles: she is not the mysterious and collected girl everyone thinks she is. In fact, she is unable to even suck blood properly! Resolved to help Luna overcome her ineptness, Tatsuta proposes to become her practice partner. Pumping life into their mundane school days, the duo gradually works toward their delectable goal, improving Luna's blood-sucking skills with every bite she takes.

Far from the city's noise lies Torishirojima—a quaint and peaceful island where time seems to move slowly. Hairi Takahara, a young boy nursing a wounded heart, uses the recent death of his grandmother as a quiet reason to leave the city for a summer retreat to Torishirojima. Upon reaching the island, Hairi finds himself surrounded by a refreshing, laid-back atmosphere, a far cry from the hustle and bustle he is used to. After moving in with his aunt, Kyouko Misaki, he prepares to spend the summer helping her sort through a shed full of artifacts his grandmother collected over the years alongside his cousin, Umi Katou, who is staying with them. While adjusting to the island's slower pace, Hairi decides to spend his free time exploring. He soon meets the cheerful Tsumugi Wenders; the antisocial Shiroha Naruse; the wandering Kamome Kushima; and the sharp-tongued Ao Sorakado. Drawn into their lives and the island's subtle mysteries, Hairi is gradually swept up in a summer filled with fun, nostalgia, and life-changing moments that will stay with him forever.

Four members of the Din Republic's spy team Lamplight embark on a mission to capture an enemy spy. Although they struggle to work together due to their clashing personalities, Thea, Monika, Erna, and Annett complete their objective. While enjoying a short break, the four girls encounter a woman named Matilda, who claims to be Annett's mother. As they get to know Matilda, the team is dragged into an escalating conflict that tests their teamwork and allegiances. Meanwhile, the remaining Lamplight members notice that the dispatched squad has yet to report back. Worried about their allies, Klaus and Lily set out on an emergency expedition to locate their missing teammates. As the two uncover troubling information about rising tensions in the area where their friends last were, they must act quickly to reassemble the team before the mission reaches the point of no return.