Tensei Akuma No Saikyo Yusha Ikusei Keikaku 2 (OVERLAP) [Light Novel]

[Machine Translation] Kakyu is a former Japanese who was reincarnated as a lower-class demon. One day, while hiding his true identity, he continues to work in the dark to protect his family. One day, he encounters Hades, the crown prince of the demon world, who ran away from home because of a quarrel between his father and son with the Demon King! He decides to take care of him for a while, but Hades seems to have some secrets...? Furthermore, he is asked to solve a case of disappearance of a local resident caused by the activation of demons by a frontier count who mistakes Cacu's extraordinary power as a "god". While working with his wife, Elsa, to solve the problem, Cacieux also sets a task for Ars, Saint Isha, and the others to grow up. He is also working behind the scenes to keep the children out of harm's way. When Cacieux sees Ars's unexpectedly rapid growth, he tries to make a promise to him...? The second installment in the extraordinary otherworldly fantasy of the strongest family in the world!

下級悪魔に転生した元日本人・カキュー。自身の正体を隠しながら、家族を守るために暗躍を続けていたある日のこと。魔王との親子喧嘩によって家を飛び出してきた魔界の王太子・ハーデスに遭遇!しばらく面倒を見ることにするものの、ハーデスには何やら秘密があるようで...?さらに、桁外れたカキューの力を「神」と勘違いしている辺境伯から、魔物の活性化に伴う領民失踪事件の解決を依頼される。妻であるエルザと共に問題解決にあたりつつ、アルスや聖女イーシャ達を成長させるための課題も仕込むカキュー。子ども達が危険な目にあわないよう、裏でこっそりと手を回していた―その矢先。アルスの思いがけない急成長を目にしたカキューは、とある約束を交わそうとするが...!?「―いつか、父さんみたいになるのが夢なんだ」最強一家の規格外異世界ファンタジー、第二弾!!