for now - i do not understand how to get traditional and radical perks for my fusion training
Traditional is killing people with pirate-themed weapons:
Radical is killing people with ninja-themed weapons:
It's 100 kills with each category of weapons for a gal to be eligible for Fusion Arts Training, I believe.
there is also second question: you will never get blossom book if you dont start in Fuso? As far as i understand this book is necessary for some kind of training (iron gals?)
You can still get the book eventually, kind of - after researching
Prize: Dating Saya, a random event can spawn each month that gives you a random research from a list.
Book of Cherry Blossoms is one of those random researches. But also, I don't see anything it's actually necessary for - it only unlocks the
Sun Martial Rituals research, but that one can also be unlocked with
Contacts: Romanica (as in,
Book of Cherry Blossoms is unnecessary if you have
Contacts: Romanica)