Kujira (くじら)

This is the story after the happy ending. A high school student was teleported to a Fantasy World, Brewers, Heavenly Grass Brave became a great magician and saved the world with his people. Because of Valtrude, the holy knight woman, who was recited for her achievements, he will now be involved in land management.But there were lots of problems with rebuilding an abandoned city, a dwarf that no longer produced iron, a shipping town that didn't pay taxes and towns plagued by monsters.The brave man who became one of Brewers' most powerful adventurers joined forces with his companions, challenging problems with sometimes magical, sometimes contemporary knowledge and more or less deceptive financial power! He returns to Earth, until that day one year later.

Even after death, the hero is given the mission of salvation - the next stage for the hero is a city that never sleeps, swirling with lust!? In this dangerous city at night, use your "superb skills" to rescue wandering women who are lurking in the clutches of evil!

The idol who transfers into the protagonist's school wants to be supported by him, even more than his girlfriend. Keita Azuma, who used to chase after idols, stopped supporting them after he got himself a cute girlfriend, his first in his entire life... One day, Keita's "oshi" (favorite) idol transferred into his classroom and he didn't know if it was good luck or bad luck. "Support me, not your girlfriend." She made a strong push on Keita. Just when he thought his glory days has come, his green spring turns gray, as he becomes captivated by this idol's allure and they fall into an immoral relationship. (Source: Comic-Walker)