Title: Erythrocytes
Character(s): Kevin/Kiseop/Hoon
Rating: safe
Length: drabble, 581 words
Genre: friendship, slight!angst, biology!au
Summary: Life is too short for emotional attachments.
A/N: because I am a biology rep who is on her way to failing biology

( the average lifespan of an erythrocyte is three to four months )