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レオだって主役になりたい！──マスコットたちのオールスター舞台裏
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The answer to the following question is obtained from Google Gemini.
西武ライオンズ published ‘レオだって主役になりたい！──マスコットたちのオールスター舞台裏’ at 2025-08-05 10:00. Please write a detailed article about this news in a polite tone with relevant information. Please reply in English with the article only.