Start quote:

” [Balanced Harem](https://tvtropes.org/pmwiki/pmwiki.php/Main/BalancedHarem): Each girl has her own side stories with Shido. He hasn’t favored any one of them either, although Tohka does seem to have a slight lead despite this as some characters have mentioned Shido loves her and there are even in-universe Shido/Tohka supporters. Then there’s the fact how in Volume 15, Tohka is the only one who enters her Inverse Form again when Mukuro makes everyone forget Shido. “

End quote.

The last statement, anyone knows what it means?