【Spring waiting icicles】How to play Oshiri Shoujo

The female ninja Sion, who went undercover to rescue her friends, was captured by
The leader of the rival evil ninja army, Senkage.
Senkage, who knows all about women’s weaknesses, is a terrifyingly lecherous ninja.

This is the first time I’ve ever seen this movie.
In the world of ninja, what is the outcome of a merciless night battle?
The story of the ninja who can’t be trusted.
A yuri manga for adults.