Just Yuuna. Sweetie, you're my peer. You're out of school. You've achieved your dream job. I just wanted you to know that I'm proud of you.

[Her smile widens a bit when she sees how embarrassed Ami is.]

You can call me Yuuna-san or Yuuna-senpai if it makes you more comfortable. But if the traditional honorifics mean that much to you, please, keep it up. I don't want to make you feel weird, y'know? But you don't have to. That's what I meant by it.