Fusion Series (Hollow) Ifaagun Ẹsẹ / Igun ẹsẹ jẹ ẹrọ iṣẹ-meji. Ti a ṣe apẹrẹ pẹlu paadi ti o rọrun ati paadi kokosẹ, o le ni rọọrun ṣatunṣe lati ipo ijoko. Paadi shin, ti o wa ni isalẹ orokun, jẹ apẹrẹ lati ṣe iranlọwọ fun fifun ẹsẹ ẹsẹ, nitorinaa ṣe iranlọwọ fun awọn olumulo lati wa ipo ikẹkọ to tọ fun awọn adaṣe oriṣiriṣi.