Light Novel (Other) Unemployed Reincarnation ~ I will be serious if I go to another world ~ (16) MF Books

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

This light novel is amazing! 2017, 2018, 2019, 2020 / Your first mission as a subordinate? Prepare to defeat ヒトガミ! Rudeus, who became a subordinate of Ryujin Orsted and received Ellis as his wife. He recovered his days of tranquility by summoning a guardian demon to protect his house.
One day, Orsted sent him his first mission to make Ariel, the second princess of the Kingdom of Asselah, king. "I have heard that there is no danger, but even if it is a place called the labyrinth. Let's keep an eye on it." Rudeus and others go to the library labyrinth looking for hints to get the backing of Ko Ryuo ペルギウス. While searching for documents of the first king, they find a diary! Author and contents of the diary? This is the 16th part of the life re-start type reincarnation fantasy with new story added!