Hellerr..
You're asking for ideas about the one shot stories right? Hehhehe
I just want to comment my suggestion.
Hmmm how about.
Typical scenes in school.
Or something fantasy or magical like spells, castle, or talking animals. ^_^
Where SB19 are the characters and their leading lady.
Thankss for reading this. Hahha.
I hope this would help you. You can ask me about other ideas too if you want. Just message me. Baekcolexsie is my username. Hehhehe.
Keep safe...