In the latest update from Akita Shoten’s Young Champion magazine, it was revealed that Morohe Yoshida and Ryōta Yuzuki are joining forces to unveil a brand-new manga titled “Boku wa Onee-chan no Omocha” (I am My Sister’s Plaything) in the upcoming September 12 issue. Yoshida takes credit for the original storyline, while Yuzuki lends their artistic prowess to bring the manga to life.

This forthcoming comedic manga revolves around a chic young lady who finds herself assuming the role of a big sister to her introverted stepbrother following their parents’ marriage. Delving into the dynamic of their relationship, the older sister playfully engages with her newfound younger sibling.
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Yoshida’s literary journey includes the launch of the romantic comedy manga “Inari, Konkon, Koi Iroha” across Kadokawa Shoten’s Young Ace magazine in 2010, which wrapped up in 2015 and even inspired an anime adaptation in 2014. The artist also introduced “Robot no Momo-Chan” in Shueisha’s Grand Jump Magazine in 2013, consolidated into a single volume in November 2015.
Yoshida’s “Tenchū x Shinkyoku ‘Ai x Uta'” embarked on its manga venture on the Gangan Online platform in June 2016, later transitioning to Monthly Shonen Gangan magazine in October of the same year. Despite an initial suspension due to the artist’s health, the manga eventually ceased publication in 2018 due to “various reasons.”

More recently, Yoshida concluded the “Asako” manga on May 23, an endeavor that began in Akita Shoten’s Dokodemo Young Champion magazine in November 2019. The manga’s concluding seventh volume hit the shelves on August 18.
Yuzuki, on the other hand, made their mark through the “Ore, Twintail ni Narimasu. Pai” manga, an adaptation of Yume Mizusawa and Ayumu Kasuga’s “Ore, Twintail ni Narimasu.” light novels, serialized in Square Enix’s Big Gangan magazine from 2014 to 2015. The accompanying anime by Hiroyuki Kanbe and Production IMS made its debut in 2014.
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A recent collaboration between Mizusawa and Yuzuki birthed the “KimiToku! Kimi ni mo Tokusatsu Eiga ga Toreru!!” manga, which landed on Shogakukan’s Manga ONE app on January 26, inviting readers to explore the realm of crafting tokusatsu films.
Source | Young Champion issue 18