If I guess correctly, the song Sakura sings in episode 20 of the first season is called "you are my love"

Other songs ↓ Tsubasa Chronicle I (animation original soundtrack) music)1. ship of fools2. BLAZE (TV size)3. believe4. black sword5. strange games6. break the sword of justice7. you are my love8. dewdrops9. tsubasa10. a tiny sunshine11. through the gate12. hear our prayer13. I talk to the rain14. ruthless15. guess how much I love you16. morning moon17. witch18. a song of storm and fire19. best years in our lives20. ループ(TV size)21.synchronicity Tsubasa Chronicle Ⅱ (animation soundtrack )1. voices silently sing2. endlessly3. storm and fire4. lost wings5. together for tomorrow6. the dreamers7. before the storm8. breathless9.风の街へ10. wayside11. if you are my love12. 1 & 0 city13. catastrophe14. fatigue15. break it down again16. when two powers collide17. blue clouds18. ユメノツバサ(Dream Wings) Tsubasa·ChronicleⅢ(animation original music)1. moebius2. IT'S (TV Size)3. we go further,everyday4. slipstream5. fireseeker6. femme7. masquerade8. play the game9. sacrifice10. afterglow11. dream scape12. swordbreaker13. need your love14. siren song15. total eclipse16. stay17. 22. storm is coming23.Aikoi24.Tokyo revelationsTsubasa Chronicle IV (animation original music)1. once upon a time there was you and me2. aikoi3. my dear feather4. merrymaking5. little one, so sweet6. you shall overcome7. prove yourself8. let go9. rainbow10. broken sword of justice11. darkness comes12. dawn13. uninvited guest14. requiem for the evil15. longingly16. run for your life17. optimistic18

. a whip and a witch19. crying alone20. ring your song21.SONIC BOOM (theme song) Source: /view/252396.htm