Mirrors:

http://filespace.com/t73igiuxquye/koyukitakahashitb5_1_hdmp4.part1.rar.html
http://filespace.com/iqdn7qggcw49/koyukitakahashitb5_1_hdmp4.part2.rar.html
http://filespace.com/8qyqy7xe1jcj/koyukitakahashitb5_1_hdmp4.zip.html