Earthian 4: Final Battle 25 years old

Messiah is missing, and presumed dead. Chihaya, however, is convinced the angelic destroyer is very much alive, and his obsession with finding Messiah is endangering his relationship with Kagetsuya. Now Chihaya will not only lose Messiah to the mad Dr. Ashino, but he may lose his own life to the very one whom he cares most about. This episode has two male characters falling in love with each other.