Your search for "夏目友人帳 メディコス アクリルキーホルダー" revealed the following:

Introducing acrylic keychains (Hanako-kun / Chocolate Outfit) from *Jibaku Shonen Hanako-kun 2*!■Distributor: Parflette

© Kinema Citrus / "Sayonara Lara" Production CommitteeThis is an acrylic keychain with a snap hook.■Size: Height: approx. 70mm × Width: approx. 66mm × Thickness: 3mm (acrylic part)■Materials: Acrylic, Iron ■Distributor: Curtain Tamashii

Introducing an acrylic keychain (Nene Yahiro / Chocolate Outfit) from *Jibaku Shonen Hanako-kun 2*! ■ Size: Approx. 60mm (H) × 55mm (W), Thickness: 3mm (acrylic portion)■ Materials: Acrylic, Iron■ Distributor: Parflette