Kumo desuga, Nanika? 13 (Kadokawa BOOKS) [Light Novel]

[Machine Translation] The only trump card against the Demon King was the "heroic" specification. Having failed to destroy it in the Jinmai War, "I" decided to go on to the next strategy. If hacking is impossible, why don't I just go directly to the center of the system, the goddess Sariel? Meanwhile, the demon army starts marching to the elf village with the imperial army in order to destroy the elves. However, a miscalculation occurs when Yamada-kun and the other reincarnated heroes head for the elven village, and they have to deal with the goddess as well as interfere with them.

魔王への特効となる唯一の切り札“勇者”という仕様。人魔大戦でこれを壊し損ねてしまった「私」は、次なる作戦に出ることにした。ハッキングが無理なら、システムの中枢、女神・サリエルのとこに直接殴り込みに行けばいいじゃん!一方、魔族軍はエルフを滅ぼすため、帝国軍と共にエルフの里へ進軍を開始する。だけど、新勇者になっちゃった山田くんたち転生者もエルフの里に向かうって大誤算が発生し、彼らを妨害しつつ女神もどうにかしなきゃだし、大忙しです!