Uchi no Kaisha no Chiisai Senpai no Hanashi

Shinozaki is an office worker whose tiny, cute senior coworker, Shiori Katase, looks after and coddles him. She is beautiful, deeply kind, and loving. Shinozaki hopes her attentiveness comes from affection rather than a sense of duty. As Shiori shows how much she enjoys caring for him, her feelings become increasingly apparent.