nickname recommendation pls's feed

I don't know if that flashback is from the 15 year lie movie or from Hikaru's POV, but at least we get to know the entire story (๑•ㅂ•)و✧! I already felt that the backstory from the previous chapters is still not enough. With this and the continuation on the next chapter, we will finally get to know the other part of the plot then we'll pinpoint them and arrange them properly in a way that we can understand. I mean, well......am I the only one who still don't understand or feels like the backstory from the previous chapters are lacking? Haha....sorry. Anyways, I wonder why Ai said that to Hikaru. And I wonder who's the first person he killed? If it's Ai, that doesn't mean she's his first victim that he killed with his own hands since it was someone else who killed Ai and even committed suicide after the murder. But if we set aside the "killing someone with his own hands", then Ai is his first victim. But there's also possible chance that Ai is not his first victim. I say that after Ai said that to Hikaru, Hikaru got more worst after being fucked up by Taiki's mother.

Hikaru dude should've went to a therapist before it's too late ╮( ̄▽ ̄)╭. But we still don't know the story from his POV. That wasn't enough for me, I want more from his POV!!