@melian6 His brother left a diary for him, he entered the tower with the help of that diary. Didn't you read all chapters from the start, if not then read it.
Check out my Manga/hwa/hua List -https://mangabuddy.com/manga-list/158476
Total Manga/hwa/hua = 811
Discord - https://discord.gg/K6sxJKzzYD
Total Manga/hwa/hua = 811
Discord - https://discord.gg/K6sxJKzzYD
Spoiler!
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