So a lot of people seem to think that this episode ' s Pure Illusion was related to or created by Buchan ' s subconsciousness . I kinda like that idea as Pops being a reflexion of Buchan ' s perception of Hidaka makes sense and I think the perviness Buchan exhibited so far is a nice explanation for the fanservice in this episode . What I can ' t really make sense of though is the implication of Sayuri ' s the lab girl had to look up her name change in attitude towards Hidaka at the end of the episode . Namely offering to bring him some tea , while she refused to do so in the earlier scene . Was it because she pitied him because Buchan got damaged ? Does anybody even know what exactly Buchan is ? So far none of the regular people seemed to be surprised by him neither . Maybe someone can weigh in here .