古明地こいしセーラーによる ♪ HORIZON ♪ です。

The following is English explanation.
Title : [Touhou MMD R18] It is a ♪ HORIZON ♪ undressing version in Koishi Komeiji.
It is ♪ HORIZON ♪ by a Koishi Komeiji sailor.

Still more, this English is a decodement by the translation software, we think that there is the part which the interpretation is difficult by probably but please pardon.