巨乳、おっとり、丁寧口調、お嬢様、徘徊、夜這い、反転、歪んだ愛、暴走、白髪・・・

つまりアンナ先輩はマキリの杯だったんだよ！

Big breasts...Gentle manner....Polite manner of speech...A princess type...Loiters about...Sneaks into others' rooms...Inverse....A twisted sense of love...Running rampant...White hair...

In other words, Anna-senpai is the Makiri's Grail.