The Cheating Lab -Ten Experiments to Keep Her Unhurt and Your Conscience Clear-

The protagonist found himself confessed to by his classmate Sakura. - Though overjoyed with his first girlfriend, his childhood friend Toka - who he'd grown distant from - suddenly invited him over after so long. - Toka explains that Sakura had confided in her, worried her boyfriend might cheat. With piercing eyes, she poses the question: - "Tell me... can you really promise you'd never cheat?" - Though he insists "Never!", he grows uneasy realizing he can't even define what counts as cheating. Seeing his turmoil, Toka offers an unexpected solution: - "Why not test the boundaries yourself and decide? If an act feels like cheating to you, then we stop. Simple, right?" - And so, at his childhood friend's insistence, their forbidden "lab experiments" begin...​