How Not To Summon A Demon Lord Vol. 10 (Light Novel)

Takuma Sakamoto is a hikikomori gamer who never leaves his room until one day he is suddenly transported to another world that is just like his favorite MMORPG, Cross Reverie, as his character from the game, Demon Lord Diablo! Turns out he has been summoned by pantherian Rem and elf Shera who wish to make him their slave, but thanks to his passive ability “Magic Reflection,” the spell backfires and they end up his slaves instead! To compensate for his social anxiety, he decides to role-play as Diablo while using his knowledge of the game and ridiculously high stats to survive. With Rem and Shera at his side, he begins traveling and making a name for himself as the “Demon Lord from another world”!
In Vol. 10, Diablo’s biggest battle yet is over, and he has managed to save Faltra. Even still, he can’t let himself rest on his laurels. He receives a summons from the king of Lyferia demanding an audience. Moreover, it turns out the wedding ring he gave to Rem actually forms a pair with Shera’s! In order to get an official substitute before he’s found out, he goes to Guildmaster Sylvie for help!
Notice: This book is written in Japanese.