Lasboss x Hero

Sagara Masamune is a struggling manga author whose battle series is rapidly approaching its final conclusion. Desperate to deliver a truly unexpected ending, he resolves to orchestrate a dramatic and fatal twist for the main heroine, Nina. However, as he meticulously works on the manuscript, he is suddenly and mysteriously pulled directly into the pages of his own creation. Now entirely trapped within the fictional universe he brought to life, Masamune finds himself alongside his own protagonists, the exorcists Haru and Nina. Though bewildered by the bizarre circumstances of his displacement, he quickly fixates on a potential solution: by finishing the narrative and executing his original plan to end Nina's life, he might finally trigger a way back to the real world.