Rin's "ココロ" with English Lyric

I had enough of Len dying in all the sad PV's but I still love his. Though I think Rin's is much better.

Why does it say in the description that the vocal is by Miku?

oh ya i never saw cause theres no wy this is mikus voice. its obviously kagamine rin.  anyway..

great song this song makes me sad espesialy the ending.once i found out what hppened it almost made cry

Yeah I didn't know that before cuz the first Kokoro video I watched was a cover.

maybe because it was used by miku but formed sound like rin because you can hear miku little bit at 0:54 - 0:56

I know Len´s a little sadder, but ever if i hear Arigato i wanna jump and open my arms to say: YES I LOVE THE LIFE! ARIGATO. This Song cheer me up ^^

Why?

Len's is sadder because his POV is the creator -- he was the one that made the creation, that thought he failed it, that felt the creation come back and touch him -- the one that had the emotions in the first place to give to his beloved robot. <3

I would think that actually Rin's is sadder because she was left by the person she seemed to somewhat love, but people think otherwise. :/