Description:

Rei had died at the young age of 17, but as he was about to move on, he was summoned back to the realm of the living as a teddy bear by his witch girlfriend, who seeks to be together with him forever and ever. Note: Includes 4 extra chapters. (Source: Mangadex)

Alternative Titles:

Yandere Kanojo ni Nemurasete Moraenai, ヤンデレ彼女に眠らせてもらえない, My Yandere Girlfriend Won't Let Me Sleep