A Boy Who Has Been Reincarnated Twice Spends Peacefully as an S-Rank Adventurer, ~ I who was a Sage and a Hero of Previous World, Will Live in Peacefullness in the Next World~ (Nido Tensei Shita Shounen wa S Rank Boukensha Toshite Heion ni Sugosu-zense ga kenja de eiyuu datta boku wa raisede wa jimini ikiru ; Nidoten ; A Boy Who Has Been Reincarnated Twice Spends Peacefully as an S-Rank Adventurer ; 두 번 전생한 소년은 S랭크 모험자로서 평온하게 산다 ; 二度転生した少年はSランク冒険者として平穏に過ごす～前世が賢者で英雄だったボクは来世では地味に生きる～ ; The Re-Reincarnated Boy Lives Peacefully as an S-Rank Adventurer ~ I, a Sage and Hero in My Previous Lives, Will Live a Simple Life in My Next ~) Chapter 30