Given the background of gang war between the Bishan and Marina
otters, this love story is machiam Romeo and Juliet.

Otters are fiercely territorial animals, and the two groups
have been know to chase members of the other family out of their
area.
However, a lone otter from Marina decided to change all of
that, and tried to be friendly with the otters from Bishan.
He would stalk them from afar and approach them when the
parents of the Bishan group were not around, which would be totally
creepy and illegal if this involved humans.
Eventually, the lone ranger from Marina was accepted by some
of the younger adults from the Bishan group, and found love as
well.
The two dated secretly for months, Korean drama style, as the
Bishan otter family's parents did not know about any of these
developments yet.
http://www.stomp.com.sg/singapore-seen/wild-singapura/forbidden-love-blossoms-between-lone-marina-male-otter-and-bishan

http://mothership.sg/2017/05/love-blossoms-between-a-bishan-female-otter-and-a-marina-male-otter-despite-territorial-rivalry/