I Swallowed the Bug Overmind's Egg

In the underground arenas of a wasteland metropolis, F-rank youth Ryker fights brutal illegal matches to save his terminally ill sister, Lena. Desperate, he ingests a mysterious King Insect egg, unlocking a terrifying power that propels his meteoric rise—at the cost of his own humanity. As he uncovers a dark Imperial plot linking his family's tragedy to human-insect hybridization, war and an insect tide engulf the city. Fully mutating into a monster, can Ryker hold onto his last thread of sanity to save his sister?