All Fiction Battles Wiki
All Fiction Battles Wiki

In this world…no, that is not a good way of putting it. In any world, there is no one with free will. Even you are doing this because you desire the result that will satisfy you, but those thoughts are in line with the ‘story’. What is happiness? If your stomach is full and a member of the opposite sex stands beside you, then you are satisfied. Even if that member of the opposite sex dies, the feeling of loss will not last too long. It does not create a gap that cannot be filled by another. Even those who seek out the finest foods despite their full stomach will settle for the food nearby when their stomach grows empty. There is no difference between biological satisfaction and happiness. If it were not for the ‘story’, that is. Many things are given value in a religious way: love, bloodline, success, one’s view of life, etc. But in a purely biological perspective, such things should not be given value. Stories support the human intellect, but they also infect it like a virus.

Bouichirou Yamato.jpg
People are weak. Cowards and criminals are automatically exterminated and the weak wish to remain in the position of the weak. This is the story mankind desires.


Bouichirou Yamato is an antagonist turned supporting character of Ichiban Ushiro no Daimaou. A time traveler that came from hundreds of years into the future, he learned the nature of The Law of Identity from his guidance teacher, who also taught him about the God of the Old Planet's wish to destroy mankind, which led him to create the technology to break through the barrier of time. Due to his relationship with Rimu, he has been waiting for Keena Soga since she was born, and he was the one who gave her hair decoration.

He became Director of Cabinet Intelligence and Magic Office and a member of the Imperial Public Safety Committee, trying to change the relationship between the gods and man so neither would have to rely on the other, freeing the gods from the system imposed onto them by the High Priests. Over 100 years ago, he sealed Peterhausen and gave Hiroshi Miwa's grandfather the Brave suit.

Powers and Stats

Tier: At least 8-C | At least 8-C, 1-A with Subjective Reality

Name: Bouichirou Yamato, Good Itself, Mankind's Lone Time Traveler

Origin: Ichiban Ushiro no Daimaou

Gender: Male

Age: Hundreds of years old

Classification: Time Traveler, Director of Cabinet Intelligence and Magic Office, Leader of the CIMO 8, Imperial Public Safety Committee member, Headmaster of the Knight Training Facility, Hero

Dimensionality: 3-D

Powers and Abilities: Superhuman Physical Characteristics, Longevity (Stated to have looked exactly the same for over 100 years), Sword Mastery, Spatial Manipulation (The Hogson-style perfect slash can ignore distance and cut with a precision higher than a monomolecular cutter, which cut at a molecular level, and bypass all kinds of barriers by cutting the dimension itself), Time Manipulation (Can control time and space), Teleportation, Dimensional Storage, Time Travel (Can travel to any point in time, including the end of mankind, unless he already existed at that time), BFR (Can send things to other dimensions), Flight, Sealing (Sealed Peterhausen), Acausality (Type 1; His soul continued to exist even after Akuto's actions changed history and erased his future) | All previous abilities, Subjective Reality (Can project his desires into the reality of the Afterlife), Fusionism (Fused with Hiroshi)

Attack Potency: At least Building level (Easily overpowered and almost killed Act 4 Akuto Sai, and then one-shot him while he was turning into the Demon King. Fought evenly against Act 5 Akuto) | At least Building level (Doesn't appear physically stronger than before), Ascendant level with Subjective Reality (Can project his desires into the the Afterlife, altering its very structure)

Speed: Supersonic (His sword moves faster than the speed of sound, creating sonic booms when not cutting space itself) | Supersonic

Lifting Strength: Unknown | Unknown

Durability: At least Building level (Tanked attacks from Act 5 Akuto) | At least Building level

Stamina: Every magician can gather mana from their surroundings, allowing them to constantly refill the amount of mana within themselves.

Range: Standard melee range, At least Tens of meters with the Hogson-style perfect slash, Cross-dimensional with BFR | Same, Ascendant with Subjective Reality

Intelligence: Extraordinary Genius. He invented a machine that can control space-time, one that can travel to any point in time, and Hiroshi's Brave suit.

Standard Equipment: Several swords

Weaknesses: None notable

Key: Act 4-Act 5 | Act 13


Notable Victories

Notable Losses

Inconclusive Battles