@Solemmaru
the author already released a lot of that but he never release one that related to maken-ki. So i doubt he will release one for this one.
Just enjoy the chapter as it is. also, this extra is still safe for work in japan standard.
Need to read more.
Interesting concept, and nice art.
Only need more progress in MC growth, not a common villain troupe/other character and more interesting plot+"plot", to be a masterpiece.