
Honestly, theres really no full flashback from what I remember and atp of the manhwa, I doubt they'd explain everything but basically very rough spoiler below
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Mc was a guide for an A class esper who wanted him exclusively and coerced him to bond. mc was like 15 then? I think unsure but he was young and he didn't really have a good childhood from what I remember so he trusted this esper. Said esper had a brother who is also a class and the brother took care of Mc while asshole esper was away. The brother learned that mc was being abused in all ways, physically, mentally, emotionally, sexually, the works. So brother helped mc escape. MC's bonded esper found out and brother died protecting MC but MC did escape which brings us to chapter 1 where Mc is afraid to go further that touching when guiding because it triggers his memories of his old bonded esper.
There's a bunch more but that's the gist of it. It's been a year or two when I last read it tho
I'm on chapter 40 can someone just tell me what chapter is the mcs past fully revealed (like a flashback)