Rumi, a high school student, participates in "Sex-Web"—a practice using voice chat and the "Trans-Hole" (BO) device, which enables remote-controlled interactive sexual experiences with real-time communication and shared sensations. After her older sister moved out, Rumi discovered the abandoned BO in her sibling’s former room and repurposed it for her own explorations.

Deeply embedded in the BO community, she cultivates nearly a dozen dynamic partnerships, seamlessly shape-shifting her demeanor—playful, assertive, or submissive—to align with each partner’s preferences. Unlike traditional masturbation, she is captivated by the thrill of surrendering control through the device. Among her connections is Daiku, a fellow student who inherited his BO from his brother. Their mirrored circumstances spark Rumi’s suspicion that they might attend the same school, fueling her curiosity about the blurred lines between their anonymous digital personas and potential real-world identities.

As her virtual engagements evolve, Rumi increasingly debates pursuing an actual relationship with one of her online partners, signaling a tentative pivot from screen-bound experimentation to tangible emotional risk. Her story intertwines anonymity, fluid self-reinvention in digital realms, and the fragile boundaries separating virtual intimacy from physical reality.