This is response to a poll request for a sequel/prequel to "Traitorous Jewelry", which itself is in the "Discovering the Sun" universe. This takes place before the events of "Discovering the Sun".
Title: For The Earth's Sake
Fandom: Kamen Rider Kabuto (Discovering the Sun AU universe)
Spoilers/Warnings: Kabuto episodes 21 on and pretty much reveals some of what's going on behind the scenes in "Discovering the Sun".
Disclaimers: Idea mine, universe not mine.
Summary: Tadokoro has a young man to shape into what he must become.( Tadokoro ponders Kagami upon meeting the boy )