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Which would explain his attitude towards her, a mix of resentment and strict protection. It is later on in this chapter where we actually get to know Nemu's full name, which explains a lot about the history of Nemu since her creation. Could it be that Mayuri, upon facing an interesting opponent such as Pernida, is getting too reckless in the way he is fighting? This would be quite similar to a scene in the manga "Naruto," where Naruto defeated Orochimaru's snake after he had been swallowed. However, Nemu quickly jumps in to the fight and catches the arrow before it makes contact with Mayuri.
Because the arrow is laced with Pernida's nerves, Nemu is forced to cut her own arm off and is left plummeting towards the nerve-infected ground. Something certainly isn't right when a character such as Nemu — who rarely shows any emotions at all — starts to become worried over her captain.
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