Asura Cryin' (5) Rakukou Underworld

is the fifth volume of the Asura Cryin' light novel series, written by Gakuto Mikumo and Illustrated by Watanuki Nao. It was released under the Dengeki Bunko Imprint in September 2006.

Synopsis
Tomoharu and Misao, who were rushed to clean the pool as class beautification committee members, headed to investigate drainage problems with Hikari Sahara, a small animal girl who is the chairman of the beautification committee. The three people, who have lost their way into the vast underground waterway due to repeated troubles, are attacked by strange and strange youkai. Tomoharu and Hikari become intimate by surviving a pinch of desperation. However, there was a cunning trap set up by the Second Student Organization. Meanwhile, at that time, the members of the Faculty of Science, who were investigating the genie Asura (Asura Machina), had discovered a mysterious underground ruin that continued from the underground library in the library. Protected by a powerful guardian, the key to unlocking the secrets of the second round of the world and the virgin (Burial Doll) lay in the ruins.

(source: Bookwalker JP - Translated)

Characters

 * Tomoharu Natsume
 * Misao Minakami
 * Aine Shizuma
 * Kanade Takatsuki
 * Reishirou Saeki
 * Ania Fortuna Someshuru Miku Crowsenbruhi
 * Takaya Kagakagari