Fortification Construction (要塞構築, Yōsai Kōchiku?) is another version of Territory Creation.
| Rank | User(s) |
|---|---|
| B | Osakabehime (Swimsuit) |
| Taking advantage of the experience of being a guardian deity of Himeji Castle, she could use this to build a stronghold. As a B rank Skill, its strong enough to endure a bombing. |
| Servant Skills |
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