主君(しゅくん)を殺した(ころした)罪を(つみを)悔いて(くいて)僧侶(そうりょ)となり、難所に(なんしょに)手掘りの(てぼりの)トンネルを(とんねるを)掘り(ほり)始めた

'Beyond Love and Hate' (Onshu no Kanata ni) is a masterpiece written by Kan Kikuchi, depicting the nobility of humans rising beyond hatred. In the Edo period, a samurai named Ichikuro who had killed his master in anger deeply repented his crime, became a monk named Ryokai, and vowed to manually dig a tunnel (domon) for travelers at Yabakei in Oita, a dangerous passage.