Oh, Illya-chan! [ Ai immediately beams at her. Sh... she's a little too radiant today... Maybe it's all the white. ] Happy Halloween! You picked out a really cute costume for the party today.

[ Here, have some headpats. ]

Hm, I guess it's not so strange for me – you know how some people dress up as their friends for Halloween as a joke? Since she was my senpai when I first joined, it's a little like that for me.