Kurenai and Kakashi vs Gai and Asuma.
Post time skip and kurenai is not pregnant. The setting is mid range at a lake side.
Strengths: She is so proficient with genjutsu that she was praised by Itachi Uchiha who is himself one of the most powerful genjutsu users in the series. She is also said to be on the same level in genjutsu as Itachi.
Strengths: Kakashi is the son of one of the most powerful ninja in konoha history named the "White Fang of Konoha". He has been praised as the strongest jounin in konoha especially after he gained the sharingan from his dying friend Obito. He has copied over 1000 jutsu in addition to possessing the raikiri or lightning blade. This ninjutsu is so powerful it was said it could split a lightning bolt in two. He also has the Mangekyo Sharingan and can use the Kamui technique to absorb his opponents attacks although using it drains a lot of his chakra.
Strengths: Asuma Sarutobi is the son of the Third Hokage Hiruzen Sarutobi the "God of shinobi". His fighting style relies mainly on his knuckle knives, he can increase their cutting power with his wind chakra and also use his fire chakra to use techniques such as burning ash cloud. His taijutsu was so powerful that he was able to fight a member of the akatsuki while at the same time protecting his team mates. It should also be noted that he was in the past one of the twelve gaurdian ninja who protected the damiyou.
Strengths: Might Guy is a powerful jounin from konoha, he uses mainly taijutsu but is so powerful in taijutsu that he has become rivals with powerful ninja such as Kakashi Hatake, and Kisame Hoshigaki. Guy is able to use the 8 gates to give himself massive power increases, but at the cost of tiring him out very much. Gai can also use a vairety of weapons and was the one who taught ten ten how to use many of her weapons.
You have seen the strengths of each of the fighters...now is the time to vote