装甲悪鬼村正 贖罪編

Originally a piece of fan writing that won a contest, receiving a visual novel adaptation by Nitroplus. A short, free story that continues after the true end.

[spoiler]Kikuchi Akitaka, guilt-ridden for forcing the responsibility of hunting Ginseigo onto his foster son Kageaki, sets off to confront him after hearing about his mercenary activity.[/spoiler]