I just finished this like 30 minute boss battle in Persona 3FES.
Brehs, the fact that it's TWO bosses kind of had me like going in. I thought I was gravy since I was pretty high level and made sure I equipped my characters with good equipment and shyt.. NOPE!
This boss battle decides to switch shyt up and throw in Russian roulette in the mix. ? Either you get weakened or he gets weakened. Took me like 20 minutes to beat the first Strength arcana boss on the right.
Okay, now the one on the left is there to fend for himself... Now he's even MORE deadly as he gets an even bigger part to wheel for his advantage.. Boss nearly killed me with like a tiny piece of HP left. I had to keep switching personas, healing myself, reviving partners all the while playing with the randomness of the wheel. In the end I left victorious. I had to walk out the room for a minute and go cook some food and shyt.
Honorable mention