Can anyone tell me what the relationship between Sousuke and Kaname and Tessa is like in the Full Metal Panic novel so far? And what is the relationship between Leonard and Kaname?

The relationship between Sousuke, Kaname and Taisa has been quite clear, and there is no possibility of a triangle anymore

Taisa was listening to Sousuke’s gorgeous explanation of the relationship between them After the relationship, it can be said that she has truly grown up, and has truly become a "Mithril Witch" with leadership style. However, there is also the problem of being too strict with herself, which makes her future fate very worrying. . .

After Kaname and Sousuke had a very gorgeous and tragic confession, they have been struggling and unable to meet each other. In the latest serialization, they finally met, but Kaname quickly turned dark. Now, she has become a confider instead of an ordinary listener, and has become a queen-like existence. She feels that she has shot Taisha and Zongsuke, and is now fully involved in Leonard's plan

Reynard can be said to have lost hope in Kaname's sincerity after Kaname shot him earlier. His only purpose now is to let Kaname use her to realize his plan to reverse time. After Kaname became dark, he felt Instead, he listened to Kaname's words