• Book Name: HYAKUNEN KESSHOU MOKUROKU Manga
• Alternative(s): 百年結晶目録; A Hundred-Year Crystal Catalogue
• Genre(s): Adventure Shounen Ai
• Author(s): Aoi Aki
• Year 2013
• Status: Ongoing Download Manga
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Summary: Bent, who gathers minerals as a sample for his research, goes to the Akkrum mines which has been closed for a long time. Then, he saw a young person inside it who suddenly collapsed. The boy’s name was Iris. Using minerals as his food, the color of the boy’s pupil glistens with rainbow colors…