To the people who call this paedophilia, it wouldn't be classed as such by psychological standards. He's not attracted to Isami because he's a child. He's attracted to the fact Isami is lonely and needs him (not specifically him but you get what I mean). He's attracted to the similarities between them, the same reason Isami is attracted to him. Yes, they kiss before he's an adult (one Isami initiated) but he rejected and rebuffed Isami constantly. They only got together after Isami had graduated high school and was in college, so by all these points, it doesn't fit the definition of paedophilia. Thank you for coming to my Ted talk.