SCITYDREAMER'S PROFILE

The bonus boss is the main character from Shin Megami Tensei: Nocturne and you have to be really careful about how you approach the battle, looking at his pattern of moves and tailoring your skillsets to account for it. One skill you have to use is a useless skill called "Null Sleep", which is a skill that blocks all damage while the user is asleep - which is absolutely useless in normal battles and completely situational at best. However, you need this skill because the boss will use a spell that forces players to sleep before using a high damage attack guaranteed to kill the whole party.

However, what makes the use of Null Sleep good is that it's not a "secret trick to instantly beat the boss", but rather, it's one step of the way. The bonus boss is really difficult, even with the usage of Null Sleep. The usage of Null Sleep actually calls for attention toward making the best use out of the tools that you're given, finding a good use for it among useful skills. Here, it's all about finding a use for something rather than being an instant boss kill trick.