Bokusatsu Tenshi Dokuro-chan 2 EP4 - Valentine's Day Kiss! Dokuro-chan!

Dokuro makes Sakura chocolate, shaped of himself, for Valentine's Day. However, she adds a special "binkan sausage" which makes Sakura really "special" and also gives him an allergic reaction. Zansu, Dokuro, and Zakuro then try to help him overcome the allergy, but all are unknown to the fact that Zansu may have a bigger goal in mind.