Villarojo is also the current Regional Representative of the Catholic Bishops Conference of the Philippines for southwest Luzon, and is a member of the CBCP Office on the Protection of Minors.

[2][3] He completed his high school formation at the Colegio de San Jose- Recoletos in Cebu City.

[4] Later, he continued his priestly training at the Pontifical and Royal University of Santo Tomas in Manila, where he took his theological studies, and obtained his licentiate degree in Ecclesiastical Philosophy.

[6] From 1998 to 2001, Villarojo continued his post-graduate studies in philosophy in Rome, at the Pontifical University of the Holy Cross, where he earned his doctorate.

[4] After studying in Rome he returned to his country and continued, until 2010, to take the task as secretary of Vidal and at the same time as coordinator of the pastoral planning board of the archdiocese.

[6] Since 2010, Villarojo has been the chairman of the pastoral team at the parish of the Our Lady of the Sacred Heart in Barangay Capitol Site, Cebu City.

[4] He was consecrated bishop on August 10, 2015 at the Cebu Metropolitan Cathedral by Archbishop José S. Palma, the current ordinary of the archdiocese.

[9] The Canonical Installation of Villarojo took place on the 21 August 2019 at the Minor Basilica of the Immaculate Conception in the Diocese of Malolos.

The installation was presided over by Cardinal Luis Antonio Tagle of Manila and Archbishop Gabriele Giordano Caccia who was the Apostolic Nuncio to the Philippines.

Following Villarojo's visit to the crypt, he returned to the altar and knelt before the Apostolic Nuncio of the Philippines, Gabriele Caccia and read the Rite of Canonical Installation beside then parish-priest chancellor Rev.

The reading of the apostolic letter signed by Pope Francis was conducted by Caccia and followed by the Filipino translation done by Rev.

The mass concluded with a Latin final blessing by Villarojo and the singing of "Psalm 100" commonly known as "Salmo 100" or "Umawit Kang Masaya" composed by Lucio San Pedro.

[13] The red base of the coat of arms represents the martyrdom of Denis, patron saint of Paris, France, of Pedro Calungsod (a Cebuano martyr and the 2nd Filipino declared as saint), and of Lawrence of Rome (another martyr), whose feast is commemorated by the Catholic Church on August 10 – the day of Bishop Villarojo's Episcopal Ordination.

The Official Newspaper of the Archdiocese of Cebu referred to the color's connection with the family name of the Bishop, which is translated in Cebuano as: "Adunay kalambigitan sa akong bangsagon nga Villarojo, kinatsila sa "dakong balay o gamayng lungsod nga pula" (A big house or a small city of red).

Moreover, the Official Newspaper of the Archdiocese of Cebu referred to red's connection with the bishop's family name, which is translated in Cebuano as adunay kalambigitan sa akong bangsagon nga Villarojo, sa dakong balay o gamayng lungsod nga pula (A big house or small city of red).

At the center of this section is a Sun in splendor, representing the Pontifical and Royal University of Santo Tomas, where he studied theology.

The brown color of the cross symbolizes Bishop Villarojo's devotion to Mary as a member of the Third Order of Discalced Carmelites.