Specifically, he’s fallen head over heels for Hululu, an anthropomorphized penguin girl from unexpected anime hit Kemono Friends.
According to the zookeeper, a penguin specialist, Humboldt penguins ordinarily mate for life, and when Grape-kun arrived at Tobu Zoo, he and a female penguin, called Midori, were already a couple.
Making things awkward is that Midori, who’s now reached the advanced (for a Humboldt penguin) age of 21 years old and Grape-kun (who’s 20) both still live in the same habitat at Tobu Zoo.
A few weeks ago it came to light that Grape–kun, one of the Humboldt penguin residents of the Tobu Zoo in Saitama Prefecture (which borders Tokyo to the north), has become infatuated with an anime character.