Episode 1

"Quantum of Trust" is the 1st episode of the "Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei Suru" Anime adaptation.

''Beautiful girls were trapped and sold at a slave auction. Trafficking by the marquis of coryde, the buyers are all corrupted aristocrats. Under the command of the kingdom, Lugh Tuatha Dé began to investigate the marquis of Coryde with the mage Dia Vicorne, his assistant Tarte, and his intelligent sister Maha, but Dia was captured by the marquis of Coryde and auctioned off!?''

Summary
The story begins with a human auction, where young girls are sold off to wealthy old men under the watchful eye of the Marquess Collide;Under the command of the kingdom, Lugh Tuatha Dé began to investigate the marquis of Coryde with the mage Dia Vicorne, his assistant Tarte, and his intelligent sister Maha, two magical assassins Dia Vicorne, his assistant Tarte, start killing the auction’s attendees and staff and freed the enslaved girls. After that the main women who organized the slave market tried to run away and save her' life but Lugh with the help of Maha navigation ambushed and assassinated her.

After this, a flashback is shown of Lugh previous life, where he was taking out members of a crime syndicate along with his rookie assistant. After killing the required members, Lugh decided to depart, but his rookie assistant suggested that he should kill every single criminal on sight, but Lugh replied that they were only hired to kill specific members so he will depart now. As they tried to escape, Lugh and the rookie were intercepted by a drone, which forced them to improvise in order to avoid it. As day broke, Lugh contacted the organization where he announced his intent to retire and become a mentor to future assassins in Japan. Using fake passports, Lugh and the rookie reached a nearby airport and took a flight to Japan. Unfortunately, their plane was attacked by a fighter jet deployed by the organization and Lugh realized that he had been set up. Lugh first thought that he can save himself but then sees that a missile is launched to destroy the plane in air .Once Lugh died, he encountered a Goddess. The Goddess gave Lugh two choices. First to be reborned as a completely different person and second to accept her request and be reborn with his memories intact to assassinate a hero The Goddess wanted Lugh to take the second choice because she needed him to kill the Hero of another world.

Characters in Order of Appearance

 * Tarte
 * Dia Viekone
 * Marquess​ Collide
 * Maha
 * Lugh Tuatha Dé
 * Assassin
 * Claris
 * Goddess