to complete the quest i need these below
1. win and keep all allies HP above 30%
2. win and make sure main character HP is no more than 70%
3. win and make sure at least 2 male partners survived ( except main character )
4. Reinforcement Inoue Orihime remainning HP is no more than 50% of total HP.
1 - win and everyone HP in your team above 30% 1/3 (No need to teach)
2. - Make sure main character HP is no more than 70% after Fight (You) (After fight keep main hp above 70%)
3. - win and make sure at least 2 male partners survived ( Man partners in Formation except main character )
4. Reinforcement Inoue Orihime remainning HP is no more than 50% of total HP. (npc who Enters in fight with your team)
Impossibble have a doubt, but follow those.
1 - Have 2 MAN in your team except main
2 - lose almost none hp in fight in your team.
3 - leave only suppport orihime to get almost killed
https://youtu.be/NrqFcl8A2VU?t=1m31s public video shared for Conquest of Might 2 (Agent of the Shinigami), the one you are doing, it's also a full video for the whole thing and not just a certain stage if that might be a concern ^^
If you are able to pull off anything similar to this with formation, stats etc. then this should help you in order to pass the stage ^^
Edit: The player shows their stats on the partner afters they complete that certain stage if you are looking for that info ^^