Gbuji was born in the premises of St Charles Catholic Church, Ubulu-Uku where his mother was participating in some religious activities.
At the parish house, he was in close contact with several priests such as Paul Emechete and J. C. Lyons SMA, and seminarians whose lives inspired Gbuji to join priesthood.
He left for Rome in 1955 with two other seminarians P. G. Ugboko who later became Monsignor and first indigenous rector of Saints Perter and Paul Major Seminary, Bodija, Ibadan and Francis Arinze who became a Cardinal.
[1] Gbuji was ordained priest on 23 November 1958 at Propaganda Fidei Chapel, Rome by Pietro Cardinal Agaginian the Prefect of the Congregation.
In 1968, he was appointed head of St. Thomas Teachers’ Training College Ibusa as foreign missionaries left the institution due to the war.
Running the new diocese was difficult due to lack of priests, fewer Catholic population in the area and the effect of the civil war that had just ended.
In 2001, he established St. Paul International Institute of Evangelization (SPIIEE) which was upgraded to Faculty of Religious Studies in Godfrey Okoye University, Enugu in 2009.