One sentence summary.
Everyone is a good friend series. The protagonist makes friends in various worlds.
The protagonist's true love is his first love: Alan Turing
Other people... You have to believe that this is all pure friendship.
Alan Turing: Haha, true love as promised, why did he die in front of me.
Please believe me, although every protagonist in the world must die, he will definitely be with his true love. You are so abused that you still have to believe that the world is still beautiful. The author is not a person with a dark psychology and revenge against society.
Intention: People go through many hardships and still remain self-reliant and confident.