Miike Tenta Mitsuyo (三池典太光世?) is the sword of Amakusa Shirou Tokisada, formerly the favored blade of a "certain one-eyed master swordsman." While normally just a simple armament summoned with Shirou, Caster of Red's Enchant Skill is able to render it as a C-rank Noble Phantasm. Due to it being an "incredibly famous sword", Caster was able to make it of much higher quality than other objects, using his writing prowess to describe how the blade is "magnificently sharp" and the amount of blood that had stained it in its lifetime to great effect. It is a Japanese sword with an iron scabbard, sharing the traditional shape but also carrying "various aspects" imbued by the soul of the swordsmith. Compared to "beautiful and lovely blades that possess a shine worthy of being called works of art", the sword is a "broadminded and deadly blade" that "specializes in cutting something." It is a first-rate sword, acknowledged as such by even Servants with their wide-ranging perspectives on all kinds of weapons. It carries the magical energy normally found in Noble Phantasms, and it allows him to damage Berserker of Black and receive her blows without at all damaging the sword.
- ↑ 1.0 1.1
 Fate/Apocrypha material - Encyclopedia: Enchant [Skill], p.157 [T]
A skill belonging to Caster of Red, Shakespeare. It could also be called “Literary Masterpiece Endowment”. It consists of making a passionate poem that begins with the following preface: “I will now explain this person’s amazingness in minute detail, so please listen without thinking it tedious, everyone.” It can raise the sharpness of a blade by saying “it can cut all things” and increase the sturdiness of the blade by saying “it can receive all attacks”, but either way, it requires literary expression great enough to move the readers in order for it to take effect.
For writers who have left their names in history, there is a good chance that they will possess such a skill or Noble Phantasm.
For Shakespeare with his extraordinary fame, he can produce even Noble Phantasms of C~E rank. For making an E rank Noble Phantasm, it would be at the level of turning a pebble lying anywhere on the road into a Noble Phantasm. For D rank, it would be a mass-producible manufactured item like a modern weapon. To reach C rank, it needs to be weapon with sufficient spiritual status for a literary master like him to express.
In this war, he used Enchant on “Miike Tenta Mitsuyo”, a famous sword said to have been the favorite blade of a certain one-eyed great swordsman. Naturally, it is C rank.
- ↑ Fate/Apocrypha - Volume 2