Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: @EspionageLove -- stop any time soon, his body trembling in Kian's arms with relief, completely overwhelmed.
This tweet contains emotions: 
joy, optimism