Watashi Ga Shinu to Shindeshimau Oji Sama to No Angai Shiawasena Nichijo Nitsuite (Sonya Bunko) [Light Novel]

[Machine Translation] Caught in a witch hunt, Grete is forced to cast a "companion spell" on Matthias, who is suffering from an incurable disease, to share his life. Somehow the spell succeeds, and Matthias is cured of his illness and restored to health. However, this magic has a surprising twist. If he has sexual contact with anyone other than a witch, he will experience extreme pain in his groin and will even fall off! It seems. ... Matthias, showing a dark possessive desire, touches Grete's skin, who is smiling in a carefree manner...

魔女狩りで捕まったグレーテは不治の病に冒されたマティアスに、命を共有する『伴侶魔法』をかけるよう強制される。なぜか魔法は成功し、マティアスの病は完治し健康に...。だが、この魔法にはとんでもない仕掛けがあった。魔女以外と性的接触すをすると股間に激痛が走り、もげる!?らしい。「...つまりはお前も、僕以外の男には触れられなくなってしまったということか」仄暗い独占欲を示すマティアスは呑気に笑っているグレーテの肌に触れ...。