so in makina's route, during the scene where JB was told to deliver the apple seedlings back to the inn by the "professor" in the basement of ichigaya (or something like that). for some reason i'd thought it's kazuki since you know, kazuki was thanatos, so for me it seems like the plausible conclusion. but when playing cocoon of caprice, specifically 14, in the scene where yuuji was with danny and robbie going to the Vancouver International Airport, robbie specifically mentioned that "they've got me working in the basement of ichigaya," and so i thought it's probably robbie. but if it's him, why would he told JB to return the apple seedlings back to the inn? is it that he just want to return the apple seedlings to makina and yuuji? or there's some other reasons?