Atsushi doesn't know Aku's name.

Atsushi: "By the way, I only know your last name. What's your name?" He asked. Looking at you.

Akutagawa: "Name — "I love"" Full name 'I love Akutagawa.’

Atsushi: "Don't you think I'm going to take this seriously? Obviously! You just want to force me to say ‘I love Akutagawa’, don't you?! After all, I love you without these tricks... lo..." He blushed deeply.

Aku: "That's how. Well done. That's how it is." grinning.

Atsushi: "Fool! Fool! Fool!"