The manga's limited edition volumes include OVA episodes. The first episode, Ban no Bangai-hen, delves into Ban's past. The second episode comprises 9 short stories such as 'Nothing is wasted,' 'Teach Me Captain!,' 'Case of the Captain of the Leftover Disposal Knights,' 'Diane and Ban,' 'Don't cry, my friend,' 'Gilthunder's Truth,' 'If the Results are Good, Everything's OK,' 'Lies and Truth,' and 'Partner.'