Destruction of the Black Order arc
While packing up the things within the European Branch and preparing to move to a new location, Allen reflects on whether or not Mana loved him or if the man was just using him, willingly looking at the Fourteenths reflection in a mirror as he thinks about Mana telling him (Allen) that he loves him.[25]
Disappearance of Cross Marian arc
Nea's old ally and Allen's master, Cross Marian, eventually chose to reveal that Allen is the host for Nea's rebirth and that he is the brother of Allen's adoptive father, Mana.[26] This revelation ultimately resulted in Allen being placed under even stricter observation, with the Black Order preparing to execute him should Nea overtake his consciousness.[27]
Phantom Thief G arc
14th took control of Allen's body
The Fourteenth takes control of Allen's body.
During battle, Allen deliberately impales both himself and a Level 4 Akuma with his Sword of Exorcism. Because the sword only harms evil things (namely Akuma and Noah), Allen believes that he will not be injured, but begins to cry out in agony as it attempts to exorcise the Noah memory within him.[28] Nea awakens briefly, using the Akuma to call out to the Millennium Earl,[29] but quickly falls back into Allen's subconscious after Yu Kanda calls Allen by a much-detested nickname, "beansprout".[30]
Despite the fact that Kanda is obligated to report any signs of the 14th's awakening, Kanda does not mention the event to anyone and Allen remains unaware of his momentary lapse of control.[31]