Shin-Aichi is a daily newspaper that was first published in 1888 in Nagoya City, Aichi Prefecture. One of the predecessors of the Chunichi Shimbun https://en.wikipedia.org/wiki/Chunichi_Shimbun
See also these threads
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第四回國防水上競技大會 - 4th National Water Sports Competition
名古屋水泳協会會 - Nagoya Swimming Association
新愛知新聞社 - Shin-Aichi Shimbun
See also these threads
Imperial Russia Tourist Party Badge organized by Shin-Aichi Shimbun in 1916/主催新愛知新聞社露國観光團章
1st variation. Obverse Handshake + crossed flags of Imperial Russia and Imperial Japan 露國 - Russia 観光團 - Tourist Party reverse 主催 - Organized by 新愛縣 - Aichi Prefecture 佐籘 - Satō 大正五年十一月 - November, 1916
asiamedals.info
Chubu Nippon Camera Days Organized by Shin-Aichi Shimbun Watch Fobs/中部日本カメラデー主催新愛知新聞社章
1938 Reverse 第四回 - 4th 皇紀二五九八年春 - 1938 Spring 中部日本カメラデー - Chubu Nippon Camera Day 主催 - Organizer 新愛知新聞社 - Shin-Aichi Shimbun https://asiamedals.info/threads/shin-aichi-shimbun-badges-and-watch-fobs.25878/
asiamedals.info
Reverse
第四回國防水上競技大會 - 4th National Water Sports Competition
名古屋水泳協会會 - Nagoya Swimming Association
新愛知新聞社 - Shin-Aichi Shimbun