what is the last name of Aika?

I have not yet decided what will be my last name  
liked these two, I still can not decide ... I have to think very carefully before deciding that  

I will choose Takaeuchi?   or choose Fujioka? .....  
I CAN'T !!!AAAAAAAAAAAAAAAAA  I CAN'T I CAN'T I CAN'T DECIDE!!!!!  

OH NO NO NO NO NO NO NO NO   
I have to eat, eat and then drink a tea.....tha's right .....
I have to be calm, very calm, very much............