The short answer: connected origins, separate identities
Nahida and Greater Lord Rukkhadevata are not simply two names for one character. Rukkhadevata was Sumeru's previous Dendro Archon. Nahida is the present Dendro Archon, known publicly as Lesser Lord Kusanali and by the Archon name Buer. They have distinct appearances, experiences and relationships, so a visual encyclopedia must preserve two character records.
Their connection is nevertheless closer than an ordinary succession. Rukkhadevata created Nahida from the purest branch of Irminsul when she realized that the corruption affecting her could not be removed by her own hand. Nahida is a new life produced from that source, capable of completing the task her predecessor could not.
The useful comparison is therefore not original versus copy. Rukkhadevata gave rise to a new being who inherited an office and a profound link to Irminsul, but Nahida had to develop her own judgment, friendships and authority.
Who was Greater Lord Rukkhadevata?
Greater Lord Rukkhadevata was remembered as Sumeru's original God of Wisdom and the creator of institutions that shaped the nation. Her legacy was so powerful that the Akademiya judged Nahida against an idealized predecessor instead of helping its new Archon grow.
During the disaster at King Deshret's civilization, Rukkhadevata used much of her power to stop forbidden knowledge and became smaller in form. Centuries later, the cataclysm brought another crisis. Her consciousness became contaminated even though her physical existence ended.
That remaining corruption matters because Irminsul stores the memories and records of Teyvat. A polluted consciousness tied to that system could continue spreading damage. The problem required someone connected to Rukkhadevata but not identical to the corrupted self.
Why Rukkhadevata created Nahida
Rukkhadevata describes Nahida through the image of a pure branch broken from Irminsul. The act creates continuity without erasing individuality: Nahida shares the source and can reach the same world-memory system, yet she is not carrying the exact contaminated identity that needs to be removed.
This is why Nahida can perform the final deletion. Rukkhadevata cannot erase herself through her own corrupted existence. Nahida, as a separate consciousness, can make the choice and execute it.
The scene also resolves Nahida's fear that she is only an inferior replacement. Rukkhadevata does not ask her to reproduce a past ideal. She recognizes Nahida as the person capable of protecting the future.
What deleting Rukkhadevata from Irminsul changes
When Nahida removes Rukkhadevata's remaining consciousness from Irminsul, the act changes the world's accessible memories and records. People no longer remember Rukkhadevata as a separate predecessor. Historical explanations reorganize around a continuity in which Nahida appears to have occupied the remembered role.
This does not mean the past physically reruns with Nahida performing every action. Irminsul alters information and memory, not every material consequence. Objects, ruins and outcomes remain, while minds and written accounts find a new explanation that no longer includes the deleted person.
The Traveler remembers because the Traveler is a Descender and is not recorded by Irminsul in the same way as Teyvat's inhabitants. That difference leaves the player holding a history that Nahida herself can no longer recall.
Why the world now tells a contradictory story
A viewer can encounter two apparently incompatible summaries. One says Rukkhadevata ruled before Nahida; another says Nahida has always been Sumeru's Dendro Archon. Both describe a valid perspective at a different point in the story.
Before the deletion, characters know the succession from Greater Lord to Lesser Lord. After it, their memory has been repaired around a world without Rukkhadevata. The contradiction is intentional evidence of Irminsul's power rather than a localization mistake.
For XianLore, spoiler-free pages use the public identity Nahida. Deep lore pages preserve Rukkhadevata as a separate, spoiler-marked entity so readers can understand images and scenes from both sides of the memory change.
Are Nahida and Rukkhadevata the same age or person?
Questions about age become confusing because gods do not follow ordinary human development and Irminsul later changes the remembered timeline. Nahida has existed for roughly five centuries when the Traveler reaches Sumeru. Rukkhadevata's life and rule extend much farther into the past.
Their similar small forms in the Irminsul encounter do not prove that they are the same consciousness at different ages. Rukkhadevata had already lost much of her power during an earlier forbidden-knowledge crisis, and the scene uses visual resemblance to express their shared source.
The clearest answer is to preserve both truths: Nahida was created from Rukkhadevata's purest Irminsul branch, and Nahida then lived a separate five-hundred-year life. Origin explains resemblance; experience establishes identity.
A practical guide to names in subtitles and searches
Use Nahida for the present character, Lesser Lord Kusanali for her Sumeru title and Buer for her Archon name. Use Greater Lord Rukkhadevata for the predecessor whose deletion becomes the central Irminsul revelation.
Searches such as previous Dendro Archon, Nahida creator and Sumeru memory deletion all belong in the relationship between these two entities. They should not create duplicate character pages or silently replace Rukkhadevata's portrait with Nahida fan art.
This naming discipline is more than database housekeeping. It lets readers move from a wallpaper to the exact period, person and spoiler context the artwork depicts.
What the comparison reveals about Nahida
Nahida begins the Sumeru arc believing wisdom means matching an unreachable predecessor. Her encounter with Rukkhadevata changes the question. Wisdom becomes the ability to understand painful information, accept responsibility and choose what protects others even when the choice removes something precious.
Rukkhadevata's final act gives Nahida freedom from comparison, but it also leaves her unable to remember the person who gave her that freedom. The Traveler's memory becomes a quiet witness to the cost.
The two characters should be linked through origin, succession and Irminsul, never collapsed into one gallery. That structure respects both the emotional logic of the story and the visual identity users are trying to find.
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