A very out-of-place man in a trench coat walked the crowded streets of Tokyo, looking for a girl he'd never seen before through his squinty eyes. He checked his watch. 6:00, school should be starting soon. This was fortunate, seeing as his query was a high-school student. [Lovely, only 100 or so high schools in this city. Guess I'll just have to see if I get lucky on the first few.] The man spoke in an accent that was unmistakably British. The unmistakably British man signaled over a taxi and asked if he could take him to the nearest high school. The driver looked at him as if he were a rapist, but reluctantly agreed.

At the school the man had arrived at, a nervous gym instructor panicked as only a nervous gym instructor could. [Just perfect, Yukari didn't call in for a substitute and homeroom starts in 5 minutes.] Minamo Kurosawa catches sight of the unmistakably British man wandering the halls and she instantly knew she was about to do something she'd regret. [Ah, sir, with the trench coat. I REALLY hate to be doing this, but you see, one of our teachers is out sick and has no substitute. Can you substitute for a day?]
[Certainly I can.]
[She teaches an English class, do you know some English?]
The man replied in his unmistakably British accent, [I seem to have a decent grasp on the tongue.]
[Thank you! Here are the lesson plans and her class is in room 3 on the second floor. I really hope you don't mind.]
[Oh, no trouble at all.]
----------------------------
Tomo Takino loked up from her newest copy of Lupin III. [She's not coming, is she Yomi?]
[Yukari's known for being late, but not this late. We're probably going to get a last-minute sub because she forgot to call in sick.]
The man walks into the room as if he'd done so a million times before. Yomi Mizuhara seems unsurprised.
[Thought so.]
[Good morning class. Your teacher has fallen ill on short notice and I have been chosen to be teaching you today as a substitute. Well then, let's begin roll call, shall we? Miss Chihiro.]
[Here.]
[Mr. Daizo.]
[Here.]
[Miss Genshiki.]
[Present.]
[Miss Handelbarz.]
[...Oh! Here.]
[Mr. Ishiyama.]
[Right here.]
[Miss Kagura.]
[Here.]
[Mis Kaorin.]
[Ah! Here.]
[Miss Kasuga... Miss Kasuga...... Miss Ayumu Kasuga...]
Yomi shouts to her left. [OSAKA!]
The sleeping Osakan quickly comes to. [Huh, wha?]
[Miss Kasuga, I presume? Or would you prefer Miss Osaka?]
[Either one really. sometimes I forget I'm Osaka and sometimes I forget I'm Ayumu Kasuga.]
[I see. Shall we continue then? Miss Mihama?]
[He~re.]
The substitute shot a baffled look back towards where the tiny voice came from to discover it did in fact belong to a person of tiny stature. Nobody was surprised at his initial reaction. He shook his head and carried on.
[Miss Mizuhara.]
[Here.]
[Mr. Odaa.]
[Here!]
[Miss Sakaki.]
[Here.]
[Mr. Sarutobi]
[Here.]
[And finally, Miss Takino, would you please put your book away. As for me, you may all call me the Doctor.]
Tomo spoke up. [Doctor what?]
[No no, Doctor WHO.]
[What?]
[No, who.]
[Who what?]
{When you asked my name, you said 'Doctor what?' In proper grammar, you would ask 'Doctor who?' or 'Doctor whom?' Get it?]
Osaka looked up from her current daze. [Doctor Who?]
[Precisely!]
[Doctor Precisely?]
[No, who!]
Tomo was approaching a splitting headache by now. [That's it! From now on we'll call the sub 'Doctor Who', got it?] She began to imitate the Doctor's accent, [Or Doctor Whom, if you'd prefer.]
[Roger that!]
[Okay!]
[Righto.]
[You got it.]
[Then it's official!]
[Nothing's official!] The Doctor barked.