Reborn! - Episode 46 "A Reason to Fight"

After Belphegor reveals his true nature, Gokudera lures Belphegor into the library for a final stand.

After a brief struggle between the two, Gokudera won, but as the time limit for the match expired, it became a struggle match for the two.

Not wanting to lose his friend, Tsuna persuaded Gokudera to abandon the ring.