Full Metal Panic! Season 1 Episode 21 Deep Trap

Sousuke completes the mission to protect Kaname and returns to his hotel with her. However, he remains on high alert as he suspects the enemy may still be after them. Meanwhile, Tessa orders a search for the potential mole within the organization that may have leaked their location to the enemy. As the team investigates, they discover a possible link between the mole and a new hotel security guard.

Sousuke and Kaname decide to leave the hotel and head to a safe house, but they are ambushed by enemy forces on the way. Sousuke manages to fight off their attackers, but Kaname is injured in the process. Sousuke takes her to a nearby hospital where she receives medical attention. During this time, she reflects on her growing feelings for Sousuke and the danger that comes with being with him.

The team uncovers evidence that the security guard is indeed the mole and they confront him. However, he refuses to cooperate and manages to escape. The team then tracks him down to an abandoned warehouse where they engage in a tense firefight. Sousuke and the team manage to capture the security guard, but not before he reveals that the enemy's ultimate goal is to capture Kaname alive.

With this information, Sousuke and the team realize they must take even greater precautions to protect Kaname. They decide to transport her to the Tuatha De Danaan, a submarine operated by Mithril, where she will be safe. Sousuke and Kaname share a bittersweet goodbye as she departs for the submarine, unsure of when or if they will ever be reunited again.

As the episode concludes, the enemy makes their move and launches a full-scale attack on the hotel. Mithril's forces engage in a fierce battle to protect their own, but the outcome remains uncertain. The future for both Kaname and Sousuke hangs precariously in the balance as the battle rages on.