Isekai Shoukan wa Nidome Desu

Setsu was summoned to the alternate world of Éclair where he ended a long war between humans, beastmen, and demons. After thus bringing peace to this land, the hero was sent back to his original world. Although he restarted his life as a baby, he retained all the memories and powers he had in the other world. While he is now old enough to go to high school, he is once again summoned to Éclair where only five years have passed since his departure…