Natsume Yuujinchou, Kobatotei Ibun Recommendations
Both protagonist deals with the same situation...
They can see things which normal people can't and they help them with their problems. Each has heart-warming stories which will surely catch your attention.
Both are gentle stories about people who can see spirits. Natsume and Kobato are similar, trying to help out the spirits they meet. NY is a running series, KI has a half-volume story with Kobato, and several one-chapter stories that have a similar style.