You literally can't miss it, since it's a hard requirement to continue the story :v, finish Tsuyu route, finish Mei's route, finish Ochaco's route, finish Jiro's route, then go to sleep at night.
Sorry, but i think im stucked, i have theorycally finished all the task (i dont have to do anything in the tasks book, all the girls says there is nothing to do), if i go to sleep the propt for the mall rescue doesnt trigger, but i've already done a run, where the promt shows off, but i decided to not achieved with history because i've havent finished the jiro's quest, so i declined the offert. But now in this run, where all the tasks was complete, the prompt has never came out, what shall i do ? Thanks for the replay <3
Ps sorry for my eventually bad english, im from italy.
Pps Love your game tho