Warning - At summer Comi some dangerous people followed me.
Day 2 around 3pm, I got on the train at Kokusai-Tenjijo Station heading for Shinkiba. 5 tattooed guys holding the same company bags sat opposite me talking about reselling.
I didn't want to take the same transfer as them, so I waited 5 mins on the platform at Shinkiba Station, but when I went to the ticket gate they were still there talking.
When I walked past, they laughed and started following me. They followed me exactly from the Keiyo Line all the way to Ueno Station.
It was too coincidental, so at Akihabara I did a pointless transfer from the Keihin-Tohoku Line to the Yamanote Line - and they did the EXACT same pointless transfer.
I got scared and went into the Shinkansen gate at Ueno Station, and all 5 just stood there staring at me.