User blog comment:Mnzombie/Issei's Peerage/@comment-201.43.17.6-20130216000957/@comment-6071483-20130216033832

I at least like the optimizing, but first Issei is SS not SSS, Second mutation are very rare he definetly  would not have that many because Ajuka-sama would not allow (it would infringe on the rating game) and while you can say that normal can become mutation pieces (true) those need to be active (inside someone for the change in that person to effect the pieces (such as issei GD), Third  what are super mutated pieces are those illegaly modified mutated pieces made to be stronger of something, kuroka Is a bishop and you cannot combine pieces, and to be able to retract pieces the body of the user needs to be destroyed (issei) noeven then they where recorded with him and where a extension of him and can only be use on him... maybe Beelzebub can extract them (in theory)..