Isekai de Hanma no Kodomo wo Sodatetara Yandere ni Sodatta

Ikumi, an office worker, jumped off an apartment building to escape a stalker, only to find himself in another world. Far from living a slow life, he was living a harsh life, and ended up raising a half-demon child named Roy who was being persecuted by the people!?

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Original Novel:

• (Amazon)Volume 1 (Amazon)Volume 2
• Renta Volume 1&2

Original Manga: Renta