Tensei Ouji wa Daraketai
Haruto is an ordinary Japanese student who is tired of constant work and study. After getting trucked, he is reincarnated as Phil Graceheart, the youngest child in a royal family. When Phil is three years old, he gets a head injury that causes him to remember his former life. Armed with the knowledge of his past self, he is now on a mission to live a completely relaxing and carefree life.
Hiraheishi wa Kako wo Yumemiru
It details the life of a mid-rank soldier who died at the very end of the war against the Demon Race. Fortunately for him, he wakes up to find that he’s a baby again, in the embrace of his real mother, years in the past. Determined to avoid the chain of tragedies that took his beloved ones away from him, he takes advantage of the advancements in swordsmanship and magic that developed during the war (as we all know, wars are when many scientific breakthroughs tend to happen), and tries his best to prepare for the demon invasion as well as strengthen himself with maximum efficiency.
Kamitachi ni Hirowareta Otoko
Ryouma Takuma, a 39-year-old man with a hidden past, finds himself in a strange white room. The gods tell him that he has died and they are sending his soul to a different world, a world where magic exists. Living alone for 3 years, his gamer soul loses common sense and starts heading toward crazy routes.
The Only Necromancer