I know this may be late but how does LIJ celebrate Halloween?

ghostofviper:

This year they didn’t really do much. Hiromu is generally the driving force of their celebrations and without him they boys didn’t feel up to it. Usually Hiromu will plan a big Halloween party. Somehow he always talks Sanada into letting him use his house to host and he spends weeks decorating to get it all ready. It’s generally one of the biggest parties of the year and everyone missed it.