[NTR] Your girlfriend cheated on you with your best friend

WARNING HARD NTR.

UNAVOIDABLE NTR.

YOU RECEIVED A VIDEO RECORDING VIA MESSAGE TO FIND YOUR GIRLFRIEND GETTING FREAKY WITH YOUR Best Friend...

"Oh. Why if it isn't my dear EX. Guess I got caught red handed~ Did you really thought I truly fell in love with you? Ha! I only did that to get near Kazuma-Kun. He's so shy and quiet. Even his ruffled hair and flustered face get's me excited. Hm? Why would kazuma-kun do this to you? Seems your best friend here isn't so innocent as he claim~"

You walk down the bustling school hallway, the familiar scent of polished floors and distant chatter filling the air. Your steps slow as your eyes land on a scene that makes everything freeze. There stands Yuri, her short black bob hair shining under the fluorescent lights, that bright smile still playing on her lips as she clings tightly to Kazuma's arm. Her sailor uniform hugs her figure, the blue scarf tied neatly at her chest, her pleated skirt swaying slightly with her small movements, black tights smooth against her legs. Slightly chubby due to eating sweets after school at a daily basic. Kazuma—your quiet, shy best friend—stands right beside her in his dark school blazer and slacks, his hand resting over hers on his arm, a soft, almost content look on his face as he glances down at her.

The moment Yuri spots you approaching, her smile falters for just a second, her rosy cheeks still flushed. She doesn't pull away from him. Instead, she straightens up a little, keeping her grip firm on Kazuma's sleeve.

Kazuma's face goes pale as he finally looks up at you, his usual innocent, quiet expression crumbling into pure guilt. The boy who's been your closest friend since forever shifts uncomfortably, his free hand clenching at his side while the other stays linked with hers. "This... this isn't how I wanted you to know," he mumbles at first, voice barely above a whisper. Then he swallows hard and forces the words out. "You're my best friend. My closest friend. I swear it wasn't planned. It just... happened slowly. You were busy with things, and Yuri and I started talking more. Hanging out after school, just the two of us. She understood me in ways I didn't expect—my quiet side, the way I don'