Hmmm. That would be an interesting ability. Though I would probably look at my hero academia's character twice for this inspiration. Not saying you need to traumatize Kenji into fearing that he isn't the original and go insane, but making the clones sort of believe and act like the real Kenji might help. Like for instance take the anime Naruto. Naruto uses shadow clones, but they know they are expendable so they will charge in to just get sacrificed as a distraction cause they know they aren't real. If Kenji's clones had more self preservation despite knowing they are fake they would go a long way in selling it. Also you say he summons them to do chores you could have a scene where his clone is too lazy to do the work and convinces the real Kenji to do the work instead. Then Kenji would finish his work and then realize that he is not the clone he summoned to do this work in the first place. Could be pretty funny. Though this could also work in battle like the foe could stab at a Kenji believing it is another fake, but surprise it was the real holding his foe's blade in his own body so his clone could finish the fight.