This might be a separate entity in itself.
I thought at first might have something to do with rose gun days, he has dredging up war-theme stuff in a lot of his works.
I already know a bit about hinamizawa past from PS so that why I am doubting it be that.
ひぐらしのなく頃に奉 Higurashi no Naku Koro Ni Hou (Hou = offering, present)
Looking at title it reminded me of bear --> 奉持つ