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.~Last Boss-tachi no Kakushigo; ラスボスたちの隠し仔; 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』を開発する～; Last Boss-tachi no Kakushigo: Maoujou ni Tensei shita Moto Shachiku Programmer Jiyuu Kimama ni "Magic Code" wo Kaihatsu suru; Last Boss-tachi no Kakushigo: Maoujou ni Tensei shita Moto Shachiku Programmer Jiyuu Kimama ni "Magic Code" o Kaihatsu suru; The Hidden Cubs of the Last Boss; The Hidden Cubs of the Last Boss: A Former Corporate Programmer Reincarnated in a Demon King's Castle Is Free to Develop a "Magic Code" at Will