In order to come to terms with his own negligence and revive Shion, Gobta, and his other fallen comrades, Rimuru reveals that he used to be a human. But his allies think nothing of it and accept him regardless, as if it's the natural thing to do. Filled with gratitude for the warm, accepting environment he's in, Rimuru turns his focus to the army from Falmuth. He entrusts Benimaru and the others to destroy the devices that are generating the enemy's Prison Field while Rimuru himself sets out to attack the advancing army and use them as nourishment to become a Demon Lord.
That's why I hoped to mingle with 
humans and get along with them...
لهذا أملتُ الاختلاط مع البشر والانسجام معهم
Deswegen dachte ich, dass ich
mich mit Menschen anfreunden könnte.
Por eso esperaba poder tener
una buena relación con ellos.
Por eso esperaba poder tener
una buena relación con ellos.
Voilà pourquoi j’espérais entretenir
de bonnes relations avec eux.
Quindi speravo di avere relazioni sociali 
con loro e di poterci andare d'accordo.
Então esperava ter
contato e amizade com eles.
Поэтому… разрывать отношения
 не хотелось — думал, сможем поладить.