I'm finally finished with my "relaxed" re-watching of Lain now that I own the DVDs, and I'm still impressed. I get the feeling that each time I watch it I will find more interesting things. In this final volume, Lain pretty much discovers who or what she is and mentally defeats Masami, who thinks he's God. The scenes in which Lain expresses her love for Arisu are so tender - both when they are young and feeling heartbeats and in the future when they meet "again". The statements about memory and the collective consciousness are fascinating, too, so of course I recommend the whole series.