The search results reveal a complex situation involving two distinct Japanese voice actors named Takahiro Hirai, with different birth dates, career periods, and bodies of work. One is a contemporary voice actor, while the other was active in the 1980s and 1990s.

The more recently active Takahiro Hirai was born on June 2, 1995, in Chiba Prefecture, Japan, and is affiliated with the agency Production Ace. He began his voice acting career providing Japanese dubbing for foreign productions, with his debut role being the child version of the character Han Jung-woo in the Korean drama I Miss You. His anime television credits include minor roles in several series. In 2015, he appeared in Isuca, The Testament of Sister New Devil, and Sky Wizards Academy. He voiced a cult member in The Rising of the Shield Hero in 2019. In 2020, he played various background characters such as The Beast, a student, and a spectator in The God of High School. He had the role of Ishigami in the water polo anime Re-Main in 2021. The following year, he voiced a zombie in the popular series Chainsaw Man and a male student in Date A Live IV. His work has also extended to video games, including a role in the 2016 game Mythic Create RPG Amadeus.

The other Takahiro Hirai, also known by the alias Takahiro Hirai, was born on March 28, 1954, in Fukuoka Prefecture, Japan. He worked as an actor, voice actor, and sound director. His known voice acting credits are from the late 1980s. He performed the role of Chinese Minion in Hayao Miyazaki's legendary 1986 film Castle in the Sky. In 1987, he voiced Bunmeis Minion in the film The Red Spectacles and provided the voice of Yuzurus father in the anime project Rumiko Takahashi Anthology. He also served as a sound director for the series Masoukishin in 1999.

The example provided in the query refers to the role of Bunmeis Minion in The Red Spectacles, which is correctly attributed to the older Takahiro Hirai born in 1954. The contemporary voice actor born in 1995 has no connection to this role.