Haré+Guu
It was adapted into a 26-episode anime television series , followed by two OVA sequels: "Haré+Guu DELUXE" and "Haré+Guu FINAL" . 
<triplet> Haré+Guu <subj> OVA <obj> instance of <triplet> Haré+Guu <subj> OVA <obj> instance of