So this anime is probably a good depiction of every guy's dream. The main character (Yamada) is your average school delinquent who accidentally discovers that he could switch bodies with another person by the act of kissing them by the lips. Or so he thought..
He later discovers that there are 7 other people who have "powers" within the school, hence the name of the anime. I'll stop talking about the plot now, the rest is up to you to see for yourself.
I feel that there were some parts where you could see what was going to happen and the ending was very cliche (imo), however the story made me keep anticipating for the next episode. Overall I would recommend this anime, it has a nicely mixed harem/romance/comedy feel to it, and I enjoyed it a lot myself.