l in the mangá

Dear Diary,
It is 2 weeks since me and l are a couple. We were only together in his início not that I didnt like it to be with him, its just I wanted to go on a encontro, data with him.
"L ?"
"Mmmm...yes ?" He said when he was eating cake.
"Could we go on a encontro, data ?"
He started to choke, "What ? Why ?"
"Becuse we are always here in the house and we never gone out, only us alone ."
He get up and came closer to me, "Should that mean that you don like to be with me ?"
"No its just...."
Before I could say something (BTW I didnt know what to say so) he kissed me (he do that very often)
"See you dont need to out with me...

I was having a discussion with my dad about Light/Kira, and recently after, this thought came up...

As another attempt to cover himself up, he made up a theory that someone else was controlling him, making him be Kira without him knowing it. And so, he was put in confinement. However, shortly after losing his memories of being Kira, he came out of confinement. Do you also see a metaphor behind that? I wonder why that didn't cruz my mind, earlier...

During the discussion, my dad pointed out that 'Kira' was an identity that the people came up with for him, and that he basically just decided "oh,...