What are the best weapon combination in Summon night swordcraft story 2?

Technically, the best weapon in the game is the one you most use.

When a weapon gets 255 TEC points, you can disassemble it and it'll keep some of the previous weapons stats as a shapestone and carry over to the next weapons form.

Without this rule, the best weapons on an all around basis are the Ethereal weapons, which are made from the Bushido scrolls you can get from the bonus dungeon inside Oni Hot Springs.

>this is technically not entirely true. the angel ice statue makes the strongest base weapons. and as far as i have seen the Bushido scrolls have the highest upgrade values. so all in all if you want to have a the most powerful weapon you should have the angel ice statues as your base then upgrade using scrolls