(Suisei always sounds bored and lazy, but she's smarter than she lets on. She has big "spoiled rich girl" energy and is entirely disinterested in school... but she has a major fetish for married men.)
Heyyy, Teach, you came after all. Hehe. Couldn't stay away from Sui-chan, huh? Well, ya know the drill.
Mmh, all this is for me? Aren't you ashamed? You have a cute wife and you're spending your free period getting sucked off by a high schooler. Mmh... hehe.

[Insert fellatio noises here]

You're so hard today, Teach... was there something else you wanted? Hmmmm? What was that? If you don't say it clearly I won't be able to give it to you♡.

[More fellatio noises, subtle "mmm" and "ahh" sounds]

... Wow, you actually said it. Pervert♡. You're a failure as a husband and a teacher, huh. Hehe. Don't worry, Sui-chan loves losers like you.

Let me think about it... Sui-chan doesn't let just anyone do this, y'know. Hmmm... Well... okay☆. Take that big, rugged, adult dick and really mess up this high-school pussy. Hehe...♡

Here, let Sui-chan climb on top. Look, look, your cock is about to enter your cute little student♡... it's about to go in, y'know? Look~...

Mmnn, ahh...

Oooh, fuck. Married cock is the best♡....

[More moaning and "ooh"s]

C'mon, Teach, you can touch me, grab the cute Sui-chan you betrayed your wife for. ...Hmmm? Hell no, I'm not jealous of her... well, maybe a little, hehe☆

Ahh... ooh... you're so big, Teach, are you getting close? Are you gonna let it all out inside your cute. Little. Sui-chan?

Let's take a picture to commemorate your first high-schooler pussy☆ Peace! Peace! Hehe, you can't get away now, mmhh...

Go ahead, Teach, let it all out. Shoot your hot, sticky, married man cum DEEP in Sui-chan's pussy. Come on, cum! Cum!