For a variety of reasons, students often buy expensive pens. Whether these be made of precious metals, have ornate carvings or engravings, or simply have a monogram on them, you will come across students who enjoy spending money on pens. For them to use the pens in the classroom and not ask if you would like to use the pen while teaching is inconsiderate.
First off, under no circumstances should you take the pen under the intention of stealing it, otherwise you can be charged. You will need to take the pen with the intention of borrowing it to avoid any legal issues.
There are several techniques that can be employed to do so; ranging from asking to borrow the pen to distracting the student and moving the pen into a bag or pocket. To ask to borrow the pen, you should have a strong rapport with the student to make the transfer of their pen to your hand as easy as possible. From that point on, depending on your relationship with the student, you can either ask to borrow the pen until the next class or simply put it in your pocket. If the student asks about the pen, you should return the pen and say that you had forgotten to return it.
If you do not know the student well enough to ask about borrowing the pen, you will need to use a distraction and take the pen. This is more difficult than it sounds, as many classrooms are small and devoid of distractions. In these cases, it may help to have another teacher enter the classroom and lead the student into the hallways to give them some flashcards, which would allow you enough time to take the pen and replace it with a fake. Other options for distracting the student involve popping balloons under the desk, or turning on a CD player located behind the student.
In the unlikely situation where you are caught, deny that you have the pen, and ask the student questions in English until they become flustered. Remember, in Japan you cannot be charged with a crime if you didn’t intend to perform a crime, so tell everyone that you are holding onto the pen for safety or because you are borrowing it.