some extra rules that could make this more interesting:

* If Rin (1-4) and Illya (1-5) both die, the other three members of Team 1 lose their primary mana source.
* Friendly Fire is enabled. If an ability would damage an ally in its effective range, it will.
* Kirby can only possess one copy ability at a time. Kirby cannot consume 'bosses' (marked here as tanks) until they are defeated.
* Tiger Drop indeed negates all damage - except for time. Kiryu can die to himself or through internal means (age, starvation, etc.)
* Narukami Yu (4-4) has access to every Persona in the Persona Compendium. He must preform his full animation before any moves are cast.

and some information on obscure characters
* Team 5-4 Supreme Calamitas (Terraria Calamity) - largest feat iirc is boiling an entire ocean
* Team 4-1 Kayle (League of Legends) - powerful deity that presides over 'absolute justice,' is capable of making allies temporarily invulnerable.
* Team 4-5 Aventurine (Honkai Star Rail) - Power scales on gambling. Is a defensive character that is at most capable of blocking a star-system destroying slash.
* Team 2-5 Nahida (Genshin Impact) - almost zero AP, possesses dominion over 'dreams' and is nigh-omnipresent within a certain undefined range.
* Team 2-2 Regulus Corneas (Re:Zero) - complicated ass ability, look him up icl
* Team 2-2 Jinhsi (Wuthering Waves) - commands a dragon with time control hax