CITRAS is a patch-based Transformer that addresses challenges in covariate-informed time series forecasting.It leverages multiple targets and covariates, considering both past and future forecasting horizons.CITRAS introduces two novel mechanisms: Key-Value (KV) Shift and Attention Score Smoothing.Experimental results show that CITRAS achieves state-of-the-art performance in both covariate-informed and multivariate forecasting.