Yes, one common theme is betrayal. In these horror stories, best friends often betray each other in the most unexpected ways. Maybe one friend sacrifices the other for their own gain or is secretly jealous and wants to harm the other.
Since I don't know the specific 'bad end friends story', it's hard to say who the characters are. But generally, there would likely be at least two friends. They could be friends from school, like classmates who have different personalities. Maybe one is more outgoing and the other is shy, and their differences cause problems in the end.
The 'bad end friends story' might be centered around a series of events that test the friendship. For example, if the friends are involved in a competition, jealousy could rear its ugly head. One friend might feel that the other is getting more attention or opportunities, and this envy could lead to backstabbing or other harmful behaviors. Or it could be a situation where a friend makes a big mistake and the others can't forgive them, resulting in the end of the friendship.
The horror in it might be due to the use of familiar Gacha Life elements in a disturbing way. The cute characters and colorful settings are subverted. It could be that a character's innocent appearance hides a malevolent intention, like a best friend secretly plotting harm, which is quite terrifying as it goes against the normal perception of friendship in the game.
One idea could be to explore a scenario where friends turn on each other due to a misunderstanding over a valuable heirloom. Maybe one friend was entrusted with it for safekeeping but lost it, and the others think it was stolen on purpose.
One common theme could be betrayal. For example, a friend might betray another for personal gain, like stealing a job opportunity that was promised to the other friend. Another theme could be miscommunication. Friends might misunderstand each other's intentions and end up in a bad situation. Also, jealousy can play a part. If one friend is jealous of the other's success or relationships, it can lead to a bad end in their friendship.
People create scary gacha life stories by using the various elements available in Gacha Life. They might start with a spooky setting like an old abandoned building or a dark forest. Then they choose characters with menacing looks or expressions. They also use the story - making features to add in elements like strange noises, mysterious events, and creepy dialogue.
Most 'Gacha Life Scary Stories' start with an innocent - looking event. It could be a character customization that seems normal at first. But then, as the player progresses, small, odd things start to happen. Like the customized character's expressions change without the player's input or the background music starts to distort slightly. This gradually builds up the spooky atmosphere.