Summary
Climax Training App
"B-brother... You see, I... I'm going on a date with my girlfriend today..."
On a quiet weekend morning, Jang Choi-geon freezes at the bombshell his stepbrother just dropped. Desperate to ruin the date, he opens the 'Peak Conditioning App.'
The more he uses it, the faster his guilt fades replaced by a dark, consuming pleasure as he watches his brother driven to the edge...