I take the Oneshot as the best story, there is no unnecessary drama, and it is obvious that Yagi loves the other streamer, the other two were only to unnecessarily lengthen the story.
Yagi seemed too stupid to me, too stupid for a nerdy and weird girl, she got carried away by the harem and hurt her friend, she deserved a little scare so that she learned the lesson, and she didn't even finish with the other girl super stalker? and we didn't know if Alice made her move? ... it was better to leave the story as Oneshot, they only killed the feeling that the previous story leaves you.