Kuroshitsuji OVA, the title is "Sono Shitsuji, Kougyou". The Funtom Company plans a stage play for the poor children for it's 3rd anniversary since its foundation.
Kuroshitsuji II OVA, the title is "Ciel in Wonderland". On one particular day at the Phantomhive manor, while jadedly browsing through reports, Ciel catches sight of a white-rabbit-eared Sebastian.