Oh man, It looks like Kirimi-chan really changed Manager's life! It must have been quite the bore before, with nothing really going on. I wonder why the ex-part-timer's had a hidden room though?
Any job like that would be sus or super desperate for workers to where you'd prolly be underpaid and overworked (although other than thousands of ppl wanting to take care of small stains, a laundromat in space sounds pretty chill)
(although i did read a manga where dry cleaning "certification" and such was something you had to study/train for as well)