Removed leaked warnings for the new characters and weapon.
Added the new boss.
I've also renamed Kujou Sara to Sara to keep the naming convention consistent with other characters like Ayaka, Itto, and Kazuha where we don't include their clan/gang name.
Finalizes the database for 2.4:
I've also renamed Kujou Sara to Sara to keep the naming convention consistent with other characters like Ayaka, Itto, and Kazuha where we don't include their clan/gang name.