1. Batman is not aware of the diary owner identities however has several weeks of prep
2. Batman is open to a minimum of resources that should only put him on their level (Usual stuff he uses for any investigations)
3. Diary Owners are currently aware of Batman's arrival in Sakigami City but have to figure out his identity
4. Both have weeks of prep
5. Diary Owners are working together
Who will win? Batman or the future?