from Death March to the Parallel World Rhapsody
Sera Oyugock is a miko of Tenion temple and a daughter of the Oyugock family. Her father is the son of Duke Oyugock and her mother is the daughter of Shiga kingdom's current king. Among her many siblings born from her father and his other wives Ringrande Oyugock and Tisrad Oyugock are her elder sister and elder brother, respectively, that share the same parents as her.

Death March to the Parallel World Rhapsody
29-year-old programmer Suzuki Ichirou finds himself transported into a fantasy RPG. Within the game, he's a 15-year-old named Satou. At first he thinks he's dreaming, but his experiences seem very real. Due to a powerful ability he possesses with limited use, he ends up wiping out an army of lizard men and becomes a high leveled adventurer. Satou decides to hide his level, and plans to live peacefully and meet new people. However, developments in the game's story, such as the return of a demon king, may cause a nuisance to Satou's plans. (Source: MangaHelpers, edited)