One shot project

My friend is asking me to do a story for a one-shot manga. Its been a long time since i last making a story for a manga. I did come up with something but i didnt know it will be a nice story or not.Heres some info for my one-shot manga project:

Plot summary: The story is about the daughter of head yakuza, Jeanne, and his childhood friend who is also his bodyguard, Nobunaga, spending they school life as a student. They were known as "The Queen and The Lion of Yagami". Both of them were feared in the school due to the incident where they beat 1 of the top 5 delinquent gang in the school just by the two of them and thats how they earned they title. After that incident a lot of delinquent gang some trying to make them as a leader and some try to challenge them.

Character: Jeanne, Nobunaga, Mitsuhide & Luna.