Icaro, an overworked office worker finds himself in a new world after choking on his coffee straw one morning. When he regains consiousness, he finds that he's seen the first glimpse of his little brother and the protagonist, Luran Blackheart. Once he knows that, well he isn't just going to stand by and let such an adorable little boy suffer at the hands of his evil parents- or his former personality!
No, he's going to make sure this boy grows up well so he can pay the bills and let him be lazy!