Вот мол есть у нас взрослые, которые спойлер

в конце он один остался

Икуно призналась Ичиго, ничего не вышло, она тоже осталась одна и посвятила жизнь науке

Какой мне вывод делать

что в аниме и речи не было про принятие кого-то там

11 episode
Mitsuru: Believing in someone will only get you betrayed!
Mitsuru: I was a fool for expecting anything from him!
Mitsuru: Why?
Mitsuru: Why make that promise if you were going to forget about it?
Kokoro: You were deeply hurt, huh?
Kokoro: So deeply that one normally wouldn't be able to recover.
Kokoro: But, you know,
Kokoro: I've betrayed and hurt someone, too.
Kokoro: I've even broken a promise.
Kokoro: I'm not the nice, gentle girl that you all think I am.
Kokoro: So if someone were to betray me,
Kokoro: I don't think I'd have any right to complain or blame them for it.
Mitsuru: So I should forgive him, too?
Kokoro: That's for you to decide.
Kokoro: What I'm trying to say is,
Kokoro: these things happen with us.
Kokoro: We're not perfect like the adults.
Kokoro: But still, I want to have relationships with people.
Kokoro: I want to laugh and cry together with others.
Ikuno: Hurry up, Mitsuru!
Kokoro: I believe in you, Mitsuru.
Mitsuru: What are you...

18 episode
Ikuno: Why am I like this?
Ikuno: I hate being like this!
Ichigo: Oh... She's just like I used to be.
Ikuno: Ichigo?
Ichigo: There's nothing wrong with being a pain.
Ichigo: I'm a pretty big one myself.
Ichigo: We're all complicated, difficult, and a pain.
Ichigo: But, y'know, I've started thinking that we're fine this way.
Ichigo: I get the feeling that going through all of this is what life is all about.
Ikuno: I probably won't be able to give up very easily.
Ikuno: I don't often take no for an answer.
Ichigo: Yeah, I know.
Ikuno: Thank you, Ichigo.

Про пришельцев из космоса я вообще не выкупил, их ценность и идеология в духе "мы вас низведём до атомов, пацаны" не могут в моей голове нормально сойтись в тандем с общем-то неплохим противопоставлением ценностей подростков и взрослых