Relationships
| eponymous members: | 東雲心菜 (ここなつ) 東雲夏陽 (ここなつ) |
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| tours: | ここなつ ワンマンツアー2024 Re:ミライコウシン〜ホシメグルウタ〜 |
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| official homepages: | https://p.eagate.573.jp/game/bemani/hinabita/p/coconatsu/ [info] |
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| social networking: | https://www.facebook.com/coconatsu5572 [info] |
| YouTube channels: | https://www.youtube.com/channel/UC8RUQYjYmmwEouEwgyev7ZA [info] |