Perhaps if I had been honest sooner, no one would have gotten hurt... Aika (older sister), Risa (younger sister), and I grew up together as childhood friends, always inseparable since school days. I've always loved Aika and secretly wished she'd become my girlfriend. But we were so close that our relationship never moved forward, and before I knew it, we were in our late twenties. I frequently came and went from the shared house where the sisters lived. One day, while talking alone with Aika, we reminisced about our school days. Suddenly, she said, "You're stuck in past glory—that's why you can't get a girlfriend. You're too old for this." I got angry—why was she lecturing me?—and snapped back, "You don't have a boyfriend either! No wonder you're alone with that attitude." Hearing that, Risa comforted me. Then, she confessed her feelings, and we started dating. It was partly out of spite toward Aika. But the moment she found out, Aika began seducing me braless. I knew she had big breasts, but seeing them this large, her nipples clearly visible… "Risa has no experience with men. I don't want her to get hurt. Let's practice sex with me instead?" Jealous and desperate to win me back, Aika kept coming on to me—even when Risa was around. And I, being the lowest of men, gave in to her temptation again and again. "Do you really love Risa?" she asked. "...I've always loved you, Aika." Why couldn't I say those words sooner... I confessed my true feelings to Risa. "I thought so... You should've just been honest from the start." She left in anger, but I knew she understood. Finally, Aika and I became lovers...