Talking about her best friend in online games, isn't it Asher? Since Asher warned her, Serena was determined not to guess that Zerash was Asher. She had expected it from the start. Asher couldn't possibly play games in the midst of his busy schedule. It's just that Zerash and Asher's personalities are so similar that it's hard to tell them apart.
There is one more thing that differentiates Asher and Zerash. Since Zerash took her to visit the theme park, it is impossible that Zerash was Asher. It's impossible for Asher to invite her to play at the theme park, because his personality is very mature, perfectionist and cold-hearted.
As usual, Asher still hasn't opened up to her even though they have kissed many times and had their first night. Serena understood Asher's situation and couldn't say it openly because Asher would definitely go on a secret mission again, just like in her memories.
