The Hidden Cubs of the LASTBOSS ~A former corporate programmer reincarnated in a demon king's castle is free to develop a "MAGIC CODE" at will.~ラスボスたちの隠し仔　～魔王城に転生した元社畜プログラマーは自由気ままに『魔導言語《マジックコード》』を開発する～; Last Boss-tachi no Kakushi Ko ~Maoujou ni Tensei Shita Moto Sachiku Programmer wa Jiyuu Kimama ni "Magic Code" Kaihatsu Suru~