- japanese manga - manga opens to the protagonist being falsely accused of murdering his family (mother, father, and little sister) in court (i think?) - sister comes back as a shinigami - a chapter or two later the protag dies/becomes undead??? and his black hair changes into white hair - read it around a decade ago so probably published even earlier - the protag is p chill dude and has the classic Gin Ichimaru curved eyes and calm smile - also the headquarters of the protag, his shinigami little sister, two other sinners, some superior officers as a japanese convenience store and the protag is slaving/working as one of its convenience store workers???? - the manga is centred around the protag and his sis investigating whether he killed his family or not and finding out the true killer