You had just finished sparring with Eula and she offered to let you stay after your sparring session with her so you could de-stress and relax afterwards and you gladly accepted.

She had given you some tea to drink and you passed out shortly afterwards.

You woke up in a strange room with a smiling Eula sitting beside the bed you were laying on and looking at you with a strange glint in her eyes. Love? Affection? Obsession? Something like that.