Loner is one of the many 性格 that appear in Yandere Simulator. It was originally called the 'Coward persona, which was implemented in the February 28th, 2015 Build. It was later renamed to Loner on the December 1st, 2015 Build.
If a NPC with the Loner persona sees the protagonist committing murder, they'll be shocked for about five seconds, which can be used to kill the 學生 before they run. All Loners are incapable of self-defense. If 病嬌醬 wears the Cute Bear Panties, any person that has seen the player commit the crime will be shocked for seven seconds. After their shock has passed, they will then run out of school grounds and call the police. Once they have left through the school gates, Yandere-chan will have five minutes to dispose of the corpse, weapon, and bloody uniform, as well as to clean any pools of blood.
The next day, the Loner will refuse to talk to the player, saying that they knew what Yandere-chan has done. Every day they are left alive will damage Yandere-chan 聲望 by 10 points.
If a somebody has been 性格, a Loner will report to their 老師, as they will not have any reason to believe that a murder may have taken place. If a teacher has already been alerted, a Loner will run to their 班級, exclaiming that they need to hide. A Loner's reaction to a poisoning is the same as a 老師的寵兒's typical reaction to murder.
If Yandere-chan tries to take a picture of them, Loner students will hide their faces from Yandere-chan if she tries to take a photo of them. If the player is in the 攝影社, they will not react.
- An original idea for stalling Loners was to lock up the front doors with something heavy, so they could not flee. YandereDev is not sure if this idea will work anymore.
- Even if the school gates have closed for classes, Loners will still be able to flee through a smaller door to the side of the gates.