She played him hard just so he would stay with her longer? why? why even bother? is she that lonely that she is willing to pretend to like someone just so they can stay friends/almost lovers?
Not really a manga just a guy who decided to draw a bunch of anime gyarus and threw some horny fanfic text in to spice it up a bit.
Like "oh no i see panties" "hehe don't stare" you get the jist
This whole manga is doo doo poo poo
You had this cool idea for a character that trained for 500 years and instead of him becoming some saitama of isekai he was made into a glorified bodyguard.
If her goal is to make you fall in love and then reject you , i say this is going pretty well.
She can basically make this weird guy play into her symphaty tricks or casually fall into her at certain times and just reject him at the moment of confession.