Singer and actor Park Jihoon is ready to roll out a solo album in April, his agency YY Entertainment said Thursday. It will be his first endeavor as a singer in three years, after his seventh EP “Blank or Black.” Since the release of the future hip-hop set, he has been focusing on his acting career, which he began as a child. He finished shooting the drama “The Legend of Military Cook,” based on a hit webtoon, while promoting the historical film “The King’s Warden,” a breakout movie in Korea in