The tyrannical rule, foolish king and greedy nobles cause the powerless citizens nothing but misfortune. In this ruined land, Sion Astal, the son of King Roland and an ordinary woman is faced with the difficult destiny of rescuing the country... and his friend!

Ryner Lute is a student of the Roland Empire Royal Magician's Academy. One day, the Roland Empire goes to war against their neighboring country Estabul. Ryner loses his classmates in the war. After the war, Ryner sets out on a journey to search the relics of a "Legendary Hero" at King Sion Astal's command and finds out that a deadly curse is spreading throughout the continent. Ryner had a hidden past that only few know.

A sequel from Eden*.

Yuki Sakuraba is the cutest little sister in the world. Although she is only in junior high, she is already as pretty as a model, has well-developed breasts, and has a great personality, too. "Let's play a game! I'm going to beat up my brother today!" "I picked out some clothes that I think you might like? "Big brother, let's take a bath together. It's been a while." But at home, she still acts like a child. I'm just enjoying the friendly sibling relationship with my cute little sister. That's what I thought....... until one day, when it was revealed that we're not actually blood-related siblings! It shouldn't be possible for my sister to be my girlfriend,...... but now things are different! (Source: Dengeki Bunko, translated)