Generation 12: Return of the Hero

Generation 11's Uroboros must be cleared in order to start.

All Shadow Missions difficulty is based on your total level: If you fail any of these Shadow Missions you will recieve them again upon leaving the Shadow Realm.
 * 1~99: Basic
 * 100~299: Intermediate
 * 300~999: Advanced
 * 1000+: Hard

Final Chapter
The mainstream then goes onto a different storyline, starting with Generation 13: Hamlet.