Asuna
Sword Art Online
and
Rin
Fate Series
But before the battle starts, let's see who won in the previous battle.
And the winner for the Kaguya vs Megumin battle is...
Kaguya!!!
A really close fight that shows how amazing character writing eventually beats even the most popular of waifus! Kaguya, who was in constant romantic war with shirogane, has used her experience in this battle and it ultimately paid off! Finally, someone with actual tactical knowledge in this war!
Cleaning the blood off of her bow, she moves on!
Now let's continue.
This battle's matchup:
Asuna
Asuna is Kirito's partner and was a sub-leader of the guild Knights of the Blood (KoB), a medium-sized guild of about thirty players, also called the strongest guild in Aincrad. Being one of the few girls that are in SAO, and even more so that she's extremely pretty, she receives many invitations and proposals. She is a skilled player earning the title "Flash" for her extraordinary sword skill that is lightning fast. Her game alias is the same as her real world name.
MAL Details
VS
Rin
Rin is a model student and idol of Shirou's school. She barely talks to other students in her school and exhibits a desire to be left alone as exemplified by her tendency to stay on the school's rooftop, away from the rest of the students. She is secretly a Magus and a Master in the Fifth Holy Grail War. In the beginning of the anime, she summons Archer for her Servant, although she originally wanted to summon Saber. Rin is reared as the successor to her family's magecraft, instructed by her father Tokiomi Toosaka to prioritize sorcery over her own interests.
MAL Details
May you choose wisely.