Honestly I prefer the novel, I read the novel first so I’m definitely biased but the writing and translation is just amazing and I felt like I understand the characters much more when I read the novel compared to reading the manhwa. Anyways, I’m not at all hating on the manhwa, it’s just personal preference and I thought maybe some ppl would be interested in reading the novel ^_^ The novel is already completed and is now on the extras and side stories.
https://www.novelupdates.com/series/stranger/