"'Sis, why do you look so similar to the Cauldron Master of the Alchemy Commission?' 'What? My brother is a genius pilot?' 'The Artisanship Commission's Furnace Master has come to visit and wants to make a personalized suit of armor for me?' A transaction made him join the Cloud Knights and leave home for several years. Upon his return, dramatic changes had happened in his family, and even his seemingly frail fiancee is a big shot!"