The YMMV page for Hogyoku ex Machina
- Fridge Logic: Two of the filler arcs that Ichigo brings back memories of are stated at the beginning of their respective storylines to take place after the point at which he and Aizen would have gone back in time (the Shuuske Amagai arc and the Zanpakuto Rebellion arc). Therefore, Ichigo should have no memory of those events.
- Harsher in Hindsight: Upon learning of Ukitake's condition, Ishida brings up the possibility of using antibiotics to cure him. In canon, we eventually learn that this would not be possible due to the pact Ukitake's parents made with Mimihagi.
- Hilarious in Hindsight:
- Muramasa can become Ichigo's zanpakuto because Ichigo doesn't have a real zanpakuto; Zangetsu is a self-created construct. Canon would later show that he really doesn't- the character everyone's been calling Zangetsu is actually the personification of Ichigo's Quincy powers, and the blade was a Quincy construct. The Inner Hollow is the real Zangetsu.
- The Inner Hollow is fine with Muramasa's intrusion because "I'm not the sword in this relationship." He actually is.
- Upon watching Koga's betrayal of Muramasa in Ichigo's flashback, the narration notes that Zaraki's relationship with his own zanpakuto is "only minutely better than the one Koga evidently had with Muramasa". We later learn in canon that Zaraki's zanpakuto spirit is actually Yachiru, meaning that Zaraki's zanpakuto is effectively his adoptive daughter, and one that he has a fairly good relationship with.
- Ho Yay: Muramasa is a devoted zanpakuto.
- Moment of Awesome: Whisper, Muramasa.
