The Story of the 1 Litre of Tears special takes place after the events in the main drama. The Special takes the view of Asou Haruto who is remembering life the way it used to be before the events of the last episode of the series.
| Actor | Role |
|---|---|
 Erika SawajiriAya Ikeuchi | Aya Ikeuchi |
 Ryo NishikidoHaruto Aso | Haruto Aso |
 Riko NarumiAko Ikeuchi | Ako Ikeuchi |
 Hiroko YakushimaruShioka Ikeuchi | Shioka Ikeuchi |
 Anri OkamotoMizuki Nagashima | Mizuki Nagashima |
 Takanori JinnaiMizuo Ikeuchi | Mizuo Ikeuchi |
 Satoko ÔshimaKyoko Nagashima | Kyoko Nagashima |
| SSarasa MorimotoRika Ikeuchi | Rika Ikeuchi |
 Yuma SanadaHiroki Ikeuchi | Hiroki Ikeuchi |
 Naohito FujikiHiroshi Mizuno | Hiroshi Mizuno |
| SSaoriMari Sugiura | Mari Sugiura |
 Kana MatsumotoSaki Matsumura | Saki Matsumura |
 Momosuke MizutaniKohei Onda | Kohei Onda |
 Ryô HashizumeKeita Nakahara | Keita Nakahara |
 AoiKeiko Tomita | Keiko Tomita |
| MMakoto KawaharaMiho Ohashi | Miho Ohashi |
 Kenichi MatsuyamaYuji Kawamoto | Yuji Kawamoto |
 Yuya EndoMakoto Takeda | Makoto Takeda |
 Shigeyuki TotsugiRyozo Nishino | Ryozo Nishino |
 Kentaro Motomura(Patient) | (Patient) |
 Masahiro KomotoNot listed | Not listed |
 Michiko IwahashiNot listed | Not listed |
| MMasahiro KobayashiNot listed | Not listed |
 Maya HamaokaNot listed | Not listed |
 Toshihide TonesakuNot listed | Not listed |
 Miwako WagatsumaNot listed | Not listed |