Shiro Shiro no Mi (Castle)
Devil Fruit, Rare
Type. Body Enhancer Paramecia
Fruit appearance. A silver fruit with hard, angular facets similar to castle turrets, crowned by a flag-like stem.
Description. The user of this devil fruit transforms into a living fortress, capable of enclosing allies for protection or to strategize, and possesses the ability to generate castle-like structures and weapons.
Sea Weakness. You are weak to water and seastone.
Fortress Body. As an action, you can absorb any willing creature or large or smaller object within 5 feet of you into your body. A creature or object absorbed into you becomes tiny while within you and treats your body interior as if it were Mordenkainen’s Magnificent Mansion. It gains full cover from within your body and half cover while looking outside the orifices on your body, which are treated as battlements. A ranged weapon used within your body targeting a creature outside it is treated as a regular ranged weapon attack, regardless of the user’s size.
Interior Manipulation. While in your fortress form, you can reshape the rooms, hallways, mundane objects, furniture, and other structures inside you at will. You can create traps, barriers, or beneficial features like healing rooms, which can heal allies for 2d6+4 hit points once per short rest. You can spend an action to eject a creature from your Fortress Body into an empty space within 10 feet of you.
Castle Cannons. Once per turn, while at least one creature is within your fortress body, you can use 1 devil fruit charge as an action to activate castle-mounted cannons that fire at a target you can see within 60 feet. The target must make a Dexterity saving throw against your Devil Fruit save DC or take 3d10 bludgeoning damage.
Spells (Castle Techniques). This devil fruit power has 9 charges. You can expend 1 or more of its charges to cast one of the following spells from it without needing to expend material components: Castle Tank (Longstrider; Self; 1 charge), Stoneskin (Self; 4 charges), Conjure Volley (5 charges). The devil fruit regains expended charges daily at dawn.
Awakening (Majestic Bastion). Once you’ve awakened your power, you can use an action to enter an enhanced Fortress Body Form to instead become a colossal fortress, as if using the Mighty Fortress spell. You can absorb any allied creature, weapons, or huge or smaller objects within 30 feet into you when you first enter this form. You cannot attack or cast spells while in this form, you can only walk, and your walking speed becomes 40 ft. This form has resistance to all damage except force, and all damage dealt to its walls is also dealt to you. This effect lasts for 10 minutes or until you fall unconscious. Once used, you can’t use this action again for another 24 hours.