Shinjiro Kawamura, notoriously known as "Seifer" from his former group, is a character and the main character of the recurring fanfiction, Death's Journey: Shadow and Smoke. He is the husband of the deceased Yukiko Kawamura, father of the missing Yukina Kawamura, brother of Kojiro Kawamura, Asuka Kujikawa's guardian, and the proud owner of Yuki. He met and befriended Issei, his neighbor, and develops a friendly bond with him at later on.