Storyline
Air Date
- October 3, 2005 – January 2, 2006
- OVA: February 28, 2007 – September 28, 2007
- To Heart 2 AD: March 26, 2008 – August 8, 2008
- To Heart 2 AD Plus: April 24, 2009 – October 17, 2009
- To Heart 2 AD Next: September 23, 2010 – December 22, 2010