[@Cerberus0807]

Sadly Persona 5 is still easier than Persona 3. And therefor is still easier than the mainline Shin Megami Tensei series.

Merciless is actually extremely easy because all weaknesses and crits do 3x damage. Sadly bosses can't be hit with crits, and they don't usually have a weakness, either. Meaning it's almost always against me in big boss fights. 

In mini-bosses it's fantastic though.