Kubera - It takes awhile, but he's a good yandere. There is another potential pairing where the guy is not right in the head. This comes even later than the previously mentioned yandere.
The Pale Horse - One of the male leads. It's pay to read, but you can read the chapters released by EGS and then try to catch up with the weekly free episodes. I can fill you in on the gap between EGS and the current free episodes if you read it fast.
Yuusha-sama ni Ikinari Kyuukon sareta no desu ga - On hiatus, not sure if it will come back.
Lan Chi - Obsessive, possessive, lacks common sense, no ill intentions, but isn't necessarily good for the protagonist. Takes a bit of reading to get there, but nothing like Kubera or ToG.
Oboreru Knife - It'll take awhile, but he becomes not good for the heroine.
Unstoppable Siblings - Appears much later.