You only need 1 side quest to unlock Seika and that's the first side-story which can be started at Bastet's office by talking to her, after that you can just continue the chapter by following through the chapter hints
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sir i don't understand why i can't finish this chapter i unlock seika and ayana but they tell me finish chaper 1 i must do what i am in vrakia for doing side quest but now i forgot sorcerer direction , i forgot things ? , i finish all quest in tampula bu just one tell me wait others upd pls help me for finish chapter 1
Thanks you