– "Until summer ends." This evokes nostalgia, the end of childhood, lost love, or the bittersweet transition to autumn. Examples in safe media: Natsu e no Tobira (The Door to Summer) by Keiko Takemiya, Natsu-iro no Sunadokei (Summer-Colored Hourglass), or the film Natsu e no Tunnel, Sayonara no Deguchi (The Tunnel to Summer, the Exit of Goodbyes).
Translated, "Natsu ga Owaru made" means "Until the End of Summer." -NekoPoi--Natsu-ga-Owaru-made---Natsu-no-Owari-...
: The story spans multiple chapters and time-skips, eventually showing the characters as adults. In the conclusion, Kou becomes a professional baseball player, but the nature of his family life is complicated by the secrets kept from him. Anime Adaptation Information – "Until summer ends
Given these translations, it seems like the title could be something like "NekoPoi: Until the Summer Ends" or a similar variation that includes the themes of summer and its end. Without more context, it's challenging to provide a detailed explanation, but it appears to be related to a creative work, possibly a manga, anime, or a song, given the structure of the title. In the conclusion, Kou becomes a professional baseball
Unfortunately, I couldn't find any information on a specific work, product, or event associated with this title. It's possible that it's a: