List of anime's down in the description.
Yudkowsky says,
"Tsuyoku naritai is Japanese. Tsuyoku is "strong"; naru is "becoming" and the form naritai is "want to become". Together it means "I want to become stronger" and it expresses a sentiment embodied more intensely in Japanese works than in any Western literature I've read."
Well, he seems to be right ^^.
Sources:
1. Sword Art Online 2, ending
2. Digimon Tamers, Last Piece
3. Tsuyoku Naritai (Miwa)
4. Full Metal Alchemist, Ray of light
5. Pokémon XY&Z, full opening
6. Inu Yasha, Every Heart
7. One Piece, One Day
8. Digimon, Don't stop, Pata Pata
9. Rurouni Kenshin, 1/2
10. Mushibugyo, Ichizu
11. Full Metal Alchemist, opening