After school, the real danger begins. When parasitic invaders infiltrate a quiet school, ordinary students are forced into extraordinary battles, blending sci-fi action, mystery, and coming-of-age drama. When the final bell rings, most students head home, but for some, school is only just beginning. In After School Invaders Vol. 1 , a seemingly ordinary school becomes the epicentre of a mysterious incursion. People begin acting strangely, then violently, transforming classrooms, corridors, and rooftops into unpredictable battlegrounds. What starts as confusion quickly escalates into a fight for survival, as students realise these "invaders" are not random, they are watching, learning, and advancing. Already juggling the countless hurdles teenagers must overcome, these students must survive, and learn as much as they can about the invaders as quickly as possible.

As tensions rise, alliances form and fractures emerge, who can really be trusted. watanao combines dynamic action with character-driven storytelling, using the familiar school setting to heighten tension and relatability. With sharp pacing and an evolving mystery, this opening volume lays the foundation for a gripping invasion where every after-school hour could be their last.