"Wasurenai yo" (忘れないよ, I Won't Forget) is Thelma Aoyama's seventh single, and her second in 2009. It was released on August 5, 2009. The title is the theme song for Hachi: A Dog's Tale, which was released in Japan on August 8. The B-side, "Don't Stop", features vocals by AI. The CD+DVD edition of the single includes the music video for "Wasurenai yo".

"Wasurenai yo"
Single by Thelma Aoyama
from the album Emotions
B-side"Don't Stop"
ReleasedAugust 5, 2009
Recorded2009
GenreJ-Pop, R&B
Length17:07
LabelUniversal J
Songwriter(s)Momo "Mocha" N
Producer(s)Momo "Mocha" N, U-Key Zone
Thelma Aoyama singles chronology
"Todoketai.../Kono Mama Zutto"
(2009)
"Wasurenai yo"
(2009)
"Fall In Love feat. SOL from BIGBANG"
(2010)
Music video
"Wasurenai yo" on YouTube

Track listing

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No.TitleLength
1."Wasurenai yo (忘れないよ, I Won't Forget)" 
2."Don't Stop" 
3."Wasurenai yo (Instrumental)" 
4."Don't Stop (Instrumental)" 
5."Wasurenai yo (Acoustic Version)" 

Live performances

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  1. 08/03 - Wasurenai yo - Hey! Hey! Hey!
  2. 08/07 - Wasurenai yo - Music Station

Charting and release

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On its first day on the Oricon charts the single debuted at #20, it has since peaked at #14. The single eventually debuted at #20 on the Oricon weekly chart, selling 4,722 physical copies that week. In its second week the single dropped three places to #23 and sold a further 3,117 copies, and sold 1,642 in its third week, bringing the total sales to 9,481 copies sold.

Oricon Charts

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Charts (2009) Peak
Position
Oricon Daily Chart 14
Oricon Weekly Chart 20

Total sales: 9,481*

Billboard Japan Charts

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Charts (2009) Peak
Position
Billboard Japan Hot 100 13
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