Yusha no Segare

is a Japanese light novel series written by Satoshi Wagahara, with illustrations by 029. The series began publication on January 10, 2017 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
On that day, a tense family meeting was held at the Kenzaki family, a general household in Tokorozawa. Diana, also known as the mysterious blonde beautiful girl Dianna's Krone, appeared in the living room of the Kenzaki family from another world. "I came as a messenger to summon Hideo Kenzaki, the hero of salvation,"

or Hideo is my father! I thought that a game-like development would fall on me, an ordinary high school student, Yasuo Kenzaki, but my father was a hero and saved a different world when I was young !?

By all means, an ordinary middle-aged father is a "hero" I can't believe it, Diana looks at me as the "son of the brave", and my sister who sees it has white eyes ...

Family peace is in a big pinch before regaining peace in another world !? What will happen to my peaceful daily life!