I'm very curious about this manga, but I started to think after seeing the owner and the yato there .. when I saw the yato I noticed that his necklace is broken as at the end of his original manga, which means that can make little time difference, then I thought of the owner and he is still obviously alive and young so I think not too long since the end of this manga, maybe Hisako was not there at the moment, I do not know, it can be silly, but I think Hisako has not died there yet, so she probably appears working in the shop normally, not in her reincarnated version. it's a possibility. ┑( ̄Д  ̄)┍ ( ̄へ ̄)
Actually i think they are going to appear again in the manga mitsuyokon-tsukumogami no yomegoryou. I saw a spoiler where yato and the manager appear, it would be my dream if hisako appears too so that they can be united again . I will leave you the link here: http://onlinexis.blogspot.mx/2017/08/mitsuyokon-tsukumogami-no-yomegoryo-vol_46.html?m=1&zx=122a1d215de41e9f