I'm not sure if Aeria can get your account back but you should send a Ticket and see:
1. Go here
A.V.A. in English
5. Character Name:
6. Date and Time:
*Just leave it like it is*
In this part, make sure you give all the detail and necessary information you think Aeria should know, for example the account name which is Sazuiike, and also try to remember when was the last time you successfully logged in / played back on IJJI
You should also explain that you don't remember the E-Mail and Password, so try to give the information you think Aeria should need to give you the account, like for example try to remember what was your clan, what was your Capsule Shop weapons, etc...
9. "Send Email."
10. Wait some hours until Aeria answer you.
Really hope you can get your account back!
When Aeria answer you, you may come here and reply again on this saying either you got your account back or not.