User blog comment:B214/Question and Answers/@comment-5882552-20130127034100/@comment-68.203.220.111-20130327121746

Technically Asia and Koneko are also engaged to Isse. Asia will never leave his side so it's implied they have an unspoken agreement to be married with kids and Koneko proposed to him and Isse accepted before his final sight with Shalba.