 Much of the staff that created the game later became the founding members of the visual novel brand Key . KSS produced a four @-@ episode all ages original video animation ( OVA ) series between 2001 and 2002 titled One : Kagayaku Kisetsu e . Cherry Lips produced a three @-@ episode adult OVA series between 2003 and 2004 titled One : True Stories . One : True Stories was later licensed for English language distribution by Media Blasters . Comic anthologies and four novels were also published , as were audio dramas . 
