True sadomasochistic sister idol Chika Arimura, popular for her love of torment, reveals an AV-style intense training session, declaring, "I love seeing boys aroused♪," driving premature ejaculation guys to tears. Through a relentless cycle of "amazing techniques → making him hold back → even more intense techniques," escalating stimulation is applied progressively, supporting and pushing toward the ultimate goal of long-lasting performance.