Hard Wheel is a Nautilus. It first appears in Dariusburst: Another Chronicle.
For Dariusburst: Another Chronicle EX
Flagship that is similar in shape to the nautilus. Has been confirmed in the past of the campaign, Mud Wheel type flagship kind of. Fosuru type flagship after the lightning invasion by, it will be responsible for the invasion planet suppression. The body, with a high defense force has been shrouded in heavy armor. Mud Wheel type as compared to been made retrofit from the laser to the missile weapon, you can put a barrage by the salvo. Burst gun is stored in the fuselage center portion.