Kei's childhood friend in 'Erde.'
| Featured works | Erde – Under the Nez Tree – |
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Experience and interpersonal relationships
Tetsuya has known Kei and Nana since childhood and has maintained a three-way friendship even as adults. This group of long-term friends forms Kei's interpersonal background beyond Takumi.
Related entries
- Appearances:Erde – Under the Nez Tree –
- Childhood friends:ケイ（Erde）
References
Data compiled on: 2026-10-07.