The stalker manga I forgot the name of

[CherryMxTx]

I suddenly remembered something I read a while ago and wanted to re-read, but I have forgotten the name. It had a serial killer who lived in a apartment in a building. He carried out his work in secret. But a detective or someone like that is on his trail. The stalker usually wears black, has black hair and is tall and lean.

 

[Reiru]

@CherryMxTx sounds like this one https://mangadex.org/title/72/superior-day

 

[CherryMxTx]

@Reiru Thank you so much that's exactly it!