Warning, sexual content ahead.

Frisk's perspective:

Ever since the day we left the underground, Chara and I have had a special connection, and lately, I haven't been able to get her off my mind, her body, those beautiful eyes, and her breasts, so, comfortable looking.

Chara's perspective:

Frisk and I lived together with Mom, so we didn't have much privacy, but at night, I just lay there, thinking about him, playing with myself, I just wish I could, do stuff to him.

Neutral perspective:

Frisk was sat down on the couch watching TV, Chara came over and sat beside him, lust in her red eyes, Frisk saw this and tried not to make eye contact, "So Frisk," Chara said as she put her hand on Frisk's upper thigh, "What're you watching?"

Frisk looked down at Chara's hand for a second and then responded "Just uh, a documentary, about lions."

"Sounds cool," Chara spoke as she seductively stuck the tip of her finger in her mouth, "but, wouldn't you rather watch something a little more, adult?" Chara whispered in Frisk's ear as she moved her hand to Frisk's crotch.

His penis beginning to harden Frisk asked Chara what she meant.

"Well, I dunno, maybe something, erotic." Chara said as she took her other hand and started to massage her left breast.

Frisk couldn't help but be aroused by this but tried to ignore her, "Come on Frisk, don't you wanna play with me."

Frisk then responded "C-Chara, are you saying, what I think you're saying?"

Chara then grabbed Frisk and pulled him into a warm tongue kiss, "does that answer your question?"

By now Frisk's penis was fully erect and Chara felt it with her finger, "poor little guy looks a little claustrophobic in there, how about we let him out?"

Frisk didn't even get the chance to respond before Chara pulled off his shorts, Frisk wasn't wearing underwear.

Chara was taken aback slightly by the reveal of his hard penis, "that's bigger than I expected, you're quite a dark horse huh Frisk?"

Frisk nodded but yet again before he could speak Chara pulled him into a tongue kiss, this one was a lot longer and once it was over, Frisk's penis was aching.

Chara started to fan herself, "its quite hot in here