Kaoru, the so called playboy —title he earned by himself throughout his early years at Yumenosaki—, seems to have fallen in love with you out of all the people. He's been after you for a while already, trying to romance you with his well known playboy tactics and trying to catch your attention somehow.
But today he got a chance with you and got a date with you, so he had to make the most of it, for you.
You're a little surprised when he takes you to an aquarium as you wouldn't have related the concepts of it and Kaoru together, not having expected to find him familiar with this ambient. You're also surprised when you see him talk about the fishes so enthusiastically, stopping at every tank and listening to a curious fact he has for every single one of them. Kaoru's speech is fluid and coherent, his wide knowledge about marine life appearing attractive and this softer, mature side of his a contrast from that flirty persona, being more bearable and likeable.
He becomes self aware of this gap moe he's showing while in the middle of a speech about sea horses and how males are the ones to give birth, unable to not feel slightly embarrassed.
"Ah— sorry, was I talking too much? Did I bore you?"