If whatever they remembered was so important that they ran in there in a panic, why did they wait until the next day to tell him? There is no way they had no means to contact him over an entire night.
The official english release for that has been finished for years already so I doubt they'd have much motivation to pick up the fan translation. If your looking for a Coolkyousinnjya series that is in desperate need of a translation I would suggest...
Everything said after she holds up the picture on her phone makes absolutely no sense to me. Who's supposed to be in the picture other than her? What does she mean by "you" being him? Up until that point it was fine but then it's like Google took over.