I want Tenshi to acquire MS way down the line.   Although that will be a long ways away.  He doesn't even have a simple sharingan yet.  Being an only child his eyes would be limited to how many times he could actually use MS.  He wouldn't have a genetic match for replacements.  If he would go blind then he would be blind.   I don't even know when Tenshi should even unlock his sharingan for the first time yet.  


Random question, do most of our characters know the more basic abilities?  Like transformations, tree climbing, water walking etc.