[Question] How do I get this?

[China IL]

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The bar that is, or do I need to be of a certain standard on the Base?

 

[Pekoms]

It is not an official NB bar, as only medical students and sensei have something that is required in their signature.
In any case, it's best to ask the person whose signature you observed it in. It may be personal or related to Kumogakure.

NOTE: the village I refer to is an RP entity, of which several members are a part of.​