[Warning: If you're not interested in the whole Isekai and Harem genre, I suggest a different story to read.] Life is a cruel mistress you may have lived your dream in reality or face hardship every second. Humanity may be the most advanced species on the planet, but they're also the dullest of nature's creations. Follow his journey as he tries to gain his subordinate's trust, and fight back their foes. Will he succeed or fail? In a world that they were summoned to protect, the protectors are the ones who are in need of protecting. Will he be able to move on from his past or will he be haunted by it? Will they accept him or not? Will they continue to serve Humanity? And most importantly, will he succeed or fail?