[Satonaka Miharu] Masou Senki Mirai ~Masou Shoujo ni Naritai Otoko no Ko no Zenritsusen Machuu Choukyou shita Kekka~ [Full Color] [biribiri]

A girlish boy chasing his dream of becoming a Magical Lance Battle Princess gets far more than he bargained for when demon bugs capture him for a relentless prostate-training regimen. Gagged, bound, and stuffed airtight with writhing tentacles that reach impossibly deep, Mirai sobs and begs through every thrust as the creatures push his body past its breaking point. Glimpses of his ordinary life—unread messages glowing in the dark, a quiet night alone by the water—and lore about rogue Free Lance Girls abandoned by the Association hint that this nightmare is woven into a far larger magical world.