Don't forget to swap the GPS keychain with normal keychain when the battery is about to run out. Always wear a glove (wool glove or fancy glove) when you do something. If you keep doing it, you will enter senpai heart.Д§. Always be there for him, no matter what happens. Be an attentive person to senpai (but don't be too much, you might scare him). If the girl didn't have a Dark History, post her identity on some random internet dating/prostitution service. Do social shaming or internet threat (dont forget to use Tor, VPN, proxy and sockpuppets), if you can, gather some incriminating evidence (or fabricate it if you got е…ѓ3T Shopping skills), and send it to senpai. Try not to stab her with kitchen knife first, hiding murder is hard and police intervention is annoying, also senpai might be upset by the sudden disappearance. If you do need to make a girl disappear from his life. Do some internet background check and or field data collection.ДҐ. Get a snapshot on every people he interact with. (Insert the GPS in a keychain, and gift it to him, even if he won't use it, he would put it on his bag for that day)Д¤. It's internet era! Put a GPS tracker inside his bag girl and stalk him through apps like chasing a pokemon.

Don't follow him from behind like stupid anime/manga. Example idea: Carry a large stack of paper and deliberately crashed into him. See Crash-into Hello in tvtropes for idea. Arranged a scenario so you can make good initial contact with him.

But make sure to make the question natural and not probe it too much.Дў.

In internet age, you could easily check his social media or internet circle. Gather as much personal identity as you can. Assuming you are a girl stalking a senpai.ДЎ.

He was a good stalker