Vitrification (透化, Tōka?, localized as "Vitrify"GO) is a serene state of mind. A mental protection that nullifies mental interference.[1]
| Rank | User(s) |
|---|---|
| A+ | Sasaki Kojirou |
| Upgraded Rank (Fate/Grand Order) | |
| B+ | Sasaki Kojirou |
| By limiting his fighting spirit as a martial artist, one can conceal his presence. (As he is not a true assassin, Kojiro cannot truly make use of the Assassin's Class Skill Presence Concealment. However, with this ability, he is able to simulate its effects to some extent.)[1] |
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