1. The first manga spinoff of the "Teasing Master Takagi-san" series, titled "Mifumi Inaba," is set to end within the next 5 chapters. The spinoff series, which focuses on the character Mifumi Inaba, has been running in Shueisha's Monthly G Fantasy magazine since 2020.

2. The "Teasing Master Takagi-san" series, created by Sōichirō Yamamoto, has been a popular romantic comedy manga that has also spawned an anime adaptation. The main series is still ongoing, but this particular spinoff is now nearing its conclusion.

3. Fans of the "Teasing Master Takagi-san" franchise can look forward to the continued adventures of the main characters, even as this specific spinoff series comes to an end. The article suggests that the core series will likely continue to provide engaging and humorous stories for readers in the future.