I just checked Takafumi Adachi's Twitter account and in the last couple of days he posted Manga drawings of MFB characters. I think they are not part of any currently existing MFB manga and I can't read japanese. That's why I want to ask if any of you know wheather or not there is going to be a new MFB manga like Bakuten Shoot Rising.
Sincerely TL14

Nothing has been announced as of now. Also he does other work now so they're probably characters of another series.

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My YT Channel I don't upload regularly.

Adachi Takafumi simply enjoys doidling and his characters are dear to him, so he likes to keep them alive.