This seems to be an official artwork that shushi_zhenliu used as a reference for post #8229741, rather than something that the artist drew on their own.

Compare:
Exhibit A - https://www.amazon.co.jp/%E3%82%AC%E3%83%BC%E3%83%AB%E3%82%BA%E3%83%90%E3%83%B3%E3%83%89%E3%82%AF%E3%83%A9%E3%82%A4-%E5%AE%89%E5%92%8C%E3%81%99%E3%81%B0%E3%82%8B-%E7%89%B9%E5%85%B8-%E3%82%BF%E3%83%AF%E3%83%AC%E3%82%B3%E9%99%90%E5%AE%9A-%E6%96%B0%E5%AE%BF/dp/B0D77M4W1L
Exhibit B - https://tower.jp/article/feature_item/2024/05/24/4001

That's definitely Teshima Nari's Subaru, yes (see post #7450670)

Damn it...This is why you shouldn't upload from Lofter while half-asleep I guess...Sorry guys.