CLEAR PEN which can make such action. This is done with a bit awkward, or perhaps the artist ran out of ammunition. We can see traces of color done in a rough, not in the same direction as well. Especially on the background we can not escape the view that the line waver. The letters are not different in this scenario too, but the dots seem to reduce the effect. Graffiti lettering is not too bad overall, at least is a complete job. Some untidy will forgive for not neglect to finish the job, take it as practice.