The World's Strongest Rearguard: A Newbie Explorer in a Labyrinth Nation

A former corporate drone is reborn as a mysterious class called 'Rearguard,' which turns out to be a versatile job that can support attacks, defense, and even healing! Around him gather his beautiful boss from his past life (who's younger than him), a mysterious demi-human mercenary girl, a high-ranking beautiful swordswoman with a hidden past, and other distinctive female members. Not only that, the 'Rearguard' has the ability to boost affection just by standing behind someone--!? The strongest protective support-class adventure tale begins now!