| Album | Wild Arms the 4th Detonator Original Score |
| Composer | Michiko Naruke |
| Disc | 3 |
| Track | 11 |
| Length | 3:39 |
| Instrumentation | Violin, trombone, whistling, tambourine, bass guitar, electric guitar |
| Previous Track | Feeling the Bonds |
| Next Track | From Your Tears... |
That Is Where The Spirit Becomes Certain (Japanese: そこに貫く意地は固く Hepburn: Soko ni Tsuranuku Iji ha Kataku)[1] is a song featured in Wild Arms 4, as Kresnik Ahtreide's leitmotif. It plays during various cutscenes throughout the game, including the scene at Port Rosalia where Kresnik rescues Jude's party from Jeremy Non, and again during the Jude vs. Kresnik battle at Platapana Passage. The song also plays during battles where Kresnik has joined the player party (Garra de Leon and Illsveil Prison), where it replaces Gun Blaze. Both this song and "Feeling the Bonds" are two songs that are associated with Kresnik's character. A hard rock version of this song was recorded for the Greatest Hits album Music the Best -rocking heart-.