In 2012, together with Tatsuro Inui, the pair signed for Singapore Armed Forces FC (currently known as Warriors FC) on 2-year contracts. He won the 2012 RHB Singapore Cup in the cup final against Tampines Rovers, with the aid of an Erwan Gunawan injury time winner, Shimpei scored a 78th-minute equaliser in the process. His second silverware in as many years in the S.League. However, he was left out of the 2013 AFC Cup squad due to the limitations on foreign players quota.
At the end of his contract with Warriors FC, Shimpei went on for trials in various countries in the region. One of which is Perak FA from the Malaysia Super League. On 31 January 2014, it was announced on his personal Facebook page that he has signed for Yadanarbon FC. He made his Myanmar National League debut on 1 February 2014, against Chin United, he was part of the starting lineup.