Zenryaku tame iki no Barodinu

During a mission, Milfeulle takes a detour to help an old man deliver a tsuchinoko kigurumi for a festival. Mint, displaced from her seat by the traveler, finds the box in the cargo bay containing the costume and helps herself. When she finds she cannot get it off and is left alone on the destination planet by Milfeulle, she is mistaken for a real life tsuchinoko by the locals.