A lovely animation. Here is the information taken from the website:
This is a lot of fun and an unusual take on the horror genre. D tells the story of, well, the letter D. As the fourth point in an unjoined rectangle, poor old D is something of a wimp and scared of the thunder and lightning which is happening outside of the spooky library in which he lives. However, there is something of which he should be even more frightened – a murderous pen who is looking to prove once and for all that he is mightier than the sword!
D was written, directed and edited by Rafael Velásquez Stanbury and produced by Chiguire Animation Studios, Los Otros Group, CNAC, Rafael Velásquez & René Alex. What is great about this animated short is that it takes a rather (well very!) unpromising premise and makes it a completely enthralling roller coaster of a ride.