Koritsuchu Madoshi, Daini no Jinsei de Mado wo Kiwameru 5 [Light Novel]

[Machine Translation] I am the mage Zev Einstein. Regretting that he had spent his entire life training in the lowest talent level of magic, he returned to his boyhood with his memories intact in order to efficiently master magic again. Eagle and his guild mates headed for Tilos, a city that once prospered thanks to its high technology, to train and earn money. The abandoned factories there had been turned into dungeons, making them efficient hunting grounds. As they continued their hunt, they met an automaton named Soarah. As they proceeded through the abandoned factory together, they were suddenly attacked by a huge battleship. They fight back with magic, but... But... they are repelled! How is it possible to be unscathed after being hit by five layers of composite magic? Floating in mid-air, no weapon attacks could reach it. What shall I do?

ワシは魔導師ゼフ=アインシュタイン。才能限界値の最も低い魔導の修業に生涯を費やしたことを後悔したワシは、効率的に魔導を極め直すため、記憶を維持したまま少年時代に戻った。ワシとギルドの仲間達は修業と金稼ぎのために、かつて高い技術力で繁栄していた街、ティロスに向かった。そこの廃工場はダンジョン化しており、効率のいい狩場になっているのだ。順調に狩りを続けていたワシらは、ソアラと名乗る一体の自動人形と出会った。ともに廃工場を進んでいると、突如、巨大な戦艦に襲われる。魔導で応戦するが...弾かれた!五重合成魔導を食らって、無傷だと...?空中に浮かび、武器による攻撃も届かない。さい、どうしてくれようか―!