Light Novel Volume 21, High School DxD Wiki

Lucifer of the Optional Attendance is the twenty first novel of the High School DxD series. It is the ninth and final novel of the Legend of Oppai Dragon and his Lively Companions arc. There are some people I want to protect. ―○●○― Encounter. White Dragon and Black Angel Khaos Disaster Life.1 Amidst the Feast of the Imperial Beast Life. Ba’al Lion of the Great King —Great King— Life.2 Team [DxD] Attacks! Determination Life. Lucifer Dawn of the Morning StarLucifer —Death Match— Last. DxD Crimson

List of High School DxD episodes - Wikipedia

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Sirzechs Lucifer/Plots, High School DxD Wiki

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Devil, High School DxD Wiki

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Light Novel Volume 20, High School DxD Wiki

High School DxD - Wikipedia

Japan's Weekly Light Novel Rankings for Mar 19 - 25

USED High School DxD Vol.1-25 Set Japanese Version Novel Ichiei Ishibumi

Light Novel Volume 16, High School DxD Wiki