Japanese Black Pine Needle Blight

Hi guys! I’m a beginner in bonsai. Is it normal for JBP for some of its needles to have dark/black spots/bands? I noticed that some needles of my JBP has it. Just googled it and not sure if its needle blight. Is this normal or do I need to worry about this? Thanks in advance.

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Watch this video
https://live.bonsaimirai.com/library/video/dothistroma-identification

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Thank you. Watched it

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