ok so, for this one i highly recomend you to do a NG+ i will list the things that you need to get it
1.-all the sabu statues. (this will give you an accesory that you need for the secret boss
2.-all Goudai misions, there are 4 of them.
2.1 get him a hamburger
2.2 destroy the mayor's golden statue
2.3 destroy all cars on of the rich people
2.4 beat the yakuza informant.
3.- get all the items at shops. (for this one i'm reffering to healing items and accessories)
4.- all the cats location (only NG+, this will give you an accesory that gives you infinite sp)
5.- buy all the move set for all the characters: for this one is mostly easy when you finish the game there is to male playable chars that will be unloked after defeating the last boss (sabu; this one also give you the second pice accesory related to the sabu statues for the secret boss) so just afther finishing the game play the NG+ and buy all the moves for this tow and the girl is mising in my case was kioko
6.- get all the henchman you can see this one on the telephone the basicaly beg you to stop this is indicated whit a pray sing over the enemys heads
7.- get an item from the secret shop: for this one you need to get 5k of money after the second run on NG+ you should get enoght money to do it i did it whit kyoko since i have 8k at the end of the second play of course these are the most powerful accesories on the game but by the time you got them you will be almost done.
8.-engridients side mision: there is a side misione that will be unlocked after you exit the school and get the key to unlock all the rooms, this one is on the kitchen of the school, there the chef whill ask you to get 4 ingridients get all of them this will give you acces to an accesory.
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