Kasumi Ikeya was someone who gave strict guidance yet never forgot to show kindness. I had always admired her like an older sister, secretly harboring romantic feelings. Then came the first time we were alone together on a business trip. As work was nearly finished, we got caught up in an unexpected problem, forcing us to extend our stay longer than planned. In a rush, I managed to secure a room at a quiet, run-down hot spring inn. Enjoying the meal prepared by the inn, we drank alcohol and relaxed the atmosphere. Kasumi's slightly flushed face looked incredibly adorable. That night, I resolved to confess. After dinner, as fireworks crackled in the distance, I took her hand and honestly expressed the emotions I'd kept hidden. She showed a brief look of surprise, then slowly nodded—and we shared our first kiss.