Shousetsu Nanatsu no Taizai: Gaiden - Sekijitsu no Outo, Nanatsu no Negai

Discover the childhoods of Gilthunder, Howzer and Griamore before they became Holy Knights, when their powers were just beginning to awaken! Children with extraordinary abilities who will have a lot to do to serve justice and protect the princesses of the kingdom of Liones! The three rascals have not finished making the four hundred blows!
A prologue to the great epic of Seven Deadly Sins rich in adventures and revelations!