My Tsukumogami Master (僕のつくもがみさま, Boku no tsukumogami-sama) is an extra chapter found in volume 8 of the Tsugumomo manga. An uncensored version was released on the author's Pixiv.
Summary
Kazuya Kagami monologues internally throughout the day. Kazuya starts his day waking up, turning off his alarm clock and trying to wake Kiriha up. Removing their blanket, Kazuya finds Kiriha to be naked. Kazuya dresses Kiriha as she remains half-asleep while he internally explains that he likes their relationship as it is currently, therefore refusing to give into sexual desire.
At school, Kazuya and Kiriha eat lunch, Kiriha having Kazuya feed her. After school, they pass by a store selling pudding, and Kiriha uses force to convince Kazuya to buy it for them after he initially refused due to being short on cash. Kazuya buys the pudding for Kiriha which the two share.
At home, Kazuya monologues about Kiriha's clothes and her casual demeanour in them. Kasumi then alerts Kazuya the bath is ready, which Kazuya notes to be the greatest trial of each day. Kiriha teases Kazuya as they both enter the bath. Kiriha has Kazuya wash her by hand since their towel was worn out. Kiriha lets out a slight moan, Kazuya noting it to be his first win.
Kazuya and Kiriha go to sleep together after, Kazuya wishing their days could continue like this forever.