Inoshiro Sensei

Inoshiro Sensei is DL’s teacher in Japan and the source of both her extraordinary stealth and her most consequential lessons about the limits of technique. He recruits her while she is an isolated teenager, trains her in a deliberately modernized and brutal form of ninjitsu, and equips her with methods that later help her enter the PREP camp. Yet his influence is not simply a gift of skills: the rescue that displays those skills also becomes, in DL’s later reckoning, a betrayal of the discipline he tried to teach.

Recruitment and First Lessons

DL encounters Inoshiro Sensei after skipping school and drifting through pachinko parlors in search of a martial-arts instructor. There, a modestly dressed man named Noboru approaches her, claiming an ability to recognize what someone is truly meant to become. He judges that DL’s play reveals a ruthless spirit and says pachinko is not her destiny; he has been instructed to find her and bring her to his teacher. DL is skeptical of a school in which the teacher’s agent seeks out the student, but, having made little progress on her own, she allows the encounter to become an opening.

At their first meeting, Inoshiro Sensei chain-smokes and keeps a hand on DL’s thigh. His manner is presumptuous, and the offer he makes is intentionally stark: he believes she has the severity of spirit required for his instruction and that certain virtues must be passed on. He also tells her that one of his karmic missions is to move beyond Japan’s insularity. Rather than begin with a formal trial, he takes her to a dance hall to observe how she moves. DL is wary and accepts only a 7-Up. At the time, she is unsettled by adolescence, menstruation, and long spells of distraction, while the military-base school has given girls only fragmentary information about puberty. The teacher sees a potential fighter in a young person who is still trying to understand her own body and place in the world.

Inoshiro Sensei’s training is an accelerated course rather than the years-long mountain apprenticeship of traditional stories. He sends DL across Japan on disorienting errands: blindfolded and wearing dark glasses, she must find her way back through the subway using only a specially chosen stone; she carries messages to strangers at addresses that may prove nonexistent or turn out to be pachinko parlors. He enrolls her in a small dojo run by a former disciple, though DL sometimes slips away from its traditional exercises for a clandestine rendezvous. These assignments make uncertainty itself part of her instruction, asking her to navigate without the usual assurances of sight, familiarity, or explanation.

A Teacher Outside the Tradition

The circumstances around Inoshiro Sensei reveal that his world is entangled with organized crime. When DL visits his home, a heavily armored white Lincoln Continental blocks the alley, and young men in black suits stand nearby. She later sees an elderly visitor in a double-breasted suit and bowler hat leave with the teacher; the visitor is helped into the car by a subordinate. Inside, empty plastic sake containers are scattered everywhere, and Noboru is unconscious while Inoshiro Sensei remains alert. DL asks him for refuge. He tests her by reaching toward her, and she immediately assumes a defensive posture. He says the gesture was only a test and explains that he and the visitor have an old relationship with many details she would not understand, involving the war. He distinguishes that history from the teacher-student bond, which, he says, can be ended; he predicts that DL will eventually return to her parents but tells her to stay for now.

Once DL can train full-time, she learns that Inoshiro Sensei is not merely preserving an ancient art. He has introduced innovations that, in his view, have corrupted ninjitsu’s original purpose and made it more cruel, worldly, and disposable. He describes a change from a lasting discipline and grand designs to violence reduced to isolated encounters, each meaningful only to itself. Yet this altered art is exactly what he believes he must transmit: not the costly grace of a warrior, but the cheap brutality of an assassin. He defends it as a resource for people who will never become warriors, who have too little time to choose correctly, or who lack the depth of feeling to kill when required. The method is a shared inheritance for people living among ordinary vulnerabilities and compromised choices.

DL resists his bleak account with the idea that anyone may have a chance to be a hero, even if that chance has not yet arrived. Inoshiro Sensei gently calls her crazy and warns that her opponents will not be samurai or ninjas but salaried, incremental people who despise those capable of decisive action. They will respect her, he suggests, only for what he teaches her. The exchange exposes a tension at the heart of his mentorship: he prepares DL to resist systems of power, but does so by passing on methods shaped by brutality and by his own disillusionment.

Techniques and the Body

Inoshiro Sensei teaches DL the Three Chinese Hands—Dim Ching, Dim Hsuen, and Dim Mak—along with the Nine Fatal Strikes and the two additional strikes that are never discussed. The curriculum includes techniques said to cause a heart attack without physical contact, make a person fall from a height, or use the Clouds of Guilt to lead someone to commit seppuku while believing the decision was entirely their own. He also gives her a catalogue of strategies excluded from the official Kumi-Uchi system, including the Furious Sparrow, Hidden Foot, Death Nose-Tickler, and the unmentionable Gojira no Chimpira. Some techniques require years of daily practice before they can be understood; until she understands them, he forbids her to use them outside training.

In later reflections, DL describes the period with Inoshiro Sensei as a recovery of her body. Her understanding of that recovery is explicitly political as well as physical: she objects to the claim that people can never know enough about their own bodies to take responsibility for them and must therefore surrender that responsibility to experts, employers, coaches, and others. The training makes bodily knowledge practical, but it does not make it innocent. Inoshiro Sensei’s lessons can restore DL’s sense of agency while also teaching her ways to manipulate, incapacitate, or kill. His instruction thus gives her power over her own movement and a dangerous power over other people.

Lessons Put to the Test

Years later, DL uses the teacher’s stealth techniques when she goes to the PREP camp to find Frenesi. She approaches the compound in black tights and a ski mask, carrying with her the lessons that make a guarded perimeter seem penetrable. At the entrance, she uses Kasumi, the ninja technique known as the Mist, to make a sentry selectively fail to notice her. Inside, she moves along the fence and through the camp, then opens a side door with an antique ivory needle that Inoshiro Sensei gave her long before. The gift and the training have become instruments in a rescue attempt, not exercises performed under his supervision.

DL’s search leads her first to a woman who knows that Frenesi has been taken to the administration building. DL again uses the teacher’s techniques, but also departs from procedure: she kisses the woman and gives her a nonlethal taste of the Kunoichi Death Kiss, a usually lethal maneuver, as a disorienting joke meant to make her reconsider her situation. The episode shows DL improvising with what she has learned, turning lethal forms into instruments of misdirection and exploiting intimacy as well as stealth. Her competence is real, but the rescue is driven by personal attachment.

Looking back on the mission, DL recognizes that she did not act as an empty agent of someone else’s will. She acted out of her own passions. In the moral terms she applies to the episode, a compromised motive can make even a successful, well-executed action false to the practitioner’s vocation, with consequences still to be paid. She concludes that it would have been better to leave Frenesi to her fate. This judgment does not erase the skill Inoshiro Sensei gave her; it marks the difference between possessing a technique and acting in accordance with a discipline.

The teacher’s presence reaches her again from Japan when DL tells Frenesi that people in Berkeley have accused her of helping frame Rex. DL admits that she could have prevented what happened, and the voice she imagines or hears across the Pacific is Inoshiro Sensei’s, anguished and scolding her for having learned nothing. The rebuke connects her earlier instruction to a later failure of judgment: his teaching has followed her beyond the dojo, not as a guarantee of right action but as a standard against which she measures herself. Inoshiro Sensei remains important because his lessons give DL both the means to act and the language for recognizing when action has betrayed its purpose.