Downer Onee-san wa Asobitai

One evening, as Haru Nitta is puzzled by the changes in his surroundings after entering junior high, he is called out to by a mysterious older woman on a park bench. “Come, boy. Let's play, choose your bey.” Bey.... Bey? Beyblade? The woman turns out to be a Corocoro reader who loves the hobby more than anything else in the world!

(Source: Corocoro, translated)