Here's something to think about since we're talking about theme songs from Detective Conan
Mai Kuraki has a double CD that has the songs she's done for the series (and movies).
The track list is this.
1. Secret of My Heart (9th ending)
2. Start in My Life (11th ending)
3. Always (used as 12th ending and used in movie 5)
4. Winter Bells (10th opening)
5. Time After Time (Hana Mau Machi de) (movie 7)
6. Kaze no La La La (12th opening)
7. Growing of My Heart (16th opening)
8. Shiroi Yuki (26th ending)
9. Ichibyōgoto ni Love for You (23rd opening)
10. Revive (25th Opening)
1. Togetsukyo (Kimi Omou) (55th ending and movie 21)
2. Yesterday Love (53rd ending)
3. Sawage☆Life (52nd ending)
4. Dynamite (39th opening and TV Special The Disappearance of Conan Edogawa: The Worst Two Days in History)
5. Muteki na Heart (48th Ending)
6. Try Again (35th Opening)
7. Koi ni Koishite (43rd ending)
8. Your Best Friend (40th ending)
9. Tomorrow is the Last Time (36th ending)
10.Summer Time Gone (29th opening)
11. Puzzle (movie 13)
I wouldn't be surprised if this prolific songstress finds more than one entry near the top spots.
Life is just a magical mystery.