Completed series: Kindle edition: 11-chapters set; paperback: 1-volume set. When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain. But Kido goes overseas after teaching Sawoo only two of the three rules. Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies. One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.

When Sawoo gets bullied in high school, his only friend Kido promises to teach him the three rules to become the greatest villain. But Kido goes overseas after giving only two of the three rules. While faithfully following the two rules, Sawoo writes Kido numerous letters in hopes of receiving the third rule, but Kido never replies. After four years, Kido comes back believing Sawoo has been writing him love letters.

Completed series: Kindle edition: 11-chapters set; paperback: 1-volume set. When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain. But Kido goes overseas after teaching Sawoo only two of the three rules. Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies. One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.

Completed series: Kindle edition: 11-chapters set; paperback: 1-volume set.When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain.But Kido goes overseas after teaching Sawoo only two of the three rules.Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies.One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.

Completed series: Kindle edition: 11-chapters set; paperback: 1-volume set. When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain. But Kido goes overseas after teaching Sawoo only two of the three rules. Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies. One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.

Completed series: Kindle edition: 11-chapters set; paperback: 1-volume set. When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain. But Kido goes overseas after teaching Sawoo only two of the three rules. Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies. One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.

Completed series: Kindle edition: 11-chapters set; paperback: 1-volume set. When Sawoo gets bullied in high school, his only friend Kido promises to teach him how to become the greatest villain. But Kido goes overseas after teaching Sawoo only two of the three rules. Faithfully following the two rules, Sawoo writes Kido many letters in the hope that he will get to learn the last remaining rule but Kido never replies. One day after four years, Kido shows up in front of Sawoo, thinking those were love letters.