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かりん
在21世纪的日本...在某处的当地居住了「吸血鬼一家」... 是从二百年前的中国！移住到日本来的滞日吸血鬼家庭... 在这家族中的长女「真红 果林」是一个极为平凡的女生 然而大家却都不知道！！其实她家是吸血鬼家族!话虽如此... 可是! "果林"看起来却一点都不像是吸血鬼!! 因为她不但若无其事的走在太阳底下!看见蒜头也不会闪避... 就连晚上也不像家人一样拥有夜视能力! 而且也和一般吸血鬼不同！！是属于"变种"的吸血鬼... 不但不是属于吸血！！血就会增加的类型!!而是不吸血的话!血就会增加的「增血鬼」。所以老是被家人取笑为是吸血鬼之耻的"果林" 却因为班上一位新来的转学生「雨水健太」而发生了转变??? 前所未闻的"增血鬼"~~"果林"所掀起的害羞学园爱情故事就此展开！！！
Karin is almost having a regular day at school, but then a new transfer student comes to her school. When Karin finds her new victim and injects her blood into her victim's body, and Kenta sees the whole thing! The next day at school, Karin and Kenta talk, Kenta possibly finds out her secret and Karin has a huge nosebleed...
Karin learns that she has a "normal" vampire's trait. She has a preference in blood.
Karin tries to figure out what happiness is.
Karin decides that she needs to keep Usui happy, so she can maintain apathy for blood. She thinks the best way to do this is make him lunches.
Usui discovers that Karin is a vampire. What will her family do about it?
Usui works every day at the restaurant to the point of exhaustion, making him really unhappy. With Karin's "taste" being unhappiness it makes it impossible for Karin to be around him without overflowing.
To add to Karin's problems, there is a new, loud mouth, transfer student who claims to be from a long generation of vampire hunters. Will he find out about Karin?!
Karin has an "accident" in the hallway. The hunter suspects Usui of being a vampire when the blood is found. How will Karin and Usui cover this up?
We get to see Anju and Karin's relationship. Anju has flashbacks of her childhood with Karin.
Karin fails a test, so Usui tutors her. Karin's dad plays the over-protective dad, and embarrasses Karin by following them around.
Winner invites Karin to a pool, so Karin decides to act really rude to him. Will her plan to be "unattractive" change Winner's views of her?
Ren sets his sights on sucking Usui's mother's blood.
After trying to bite Usui, Karin feels like she betrayed him, and thinks that he hates her. Meanwhile, Ren is still after Usui's mom.
Karin finally realizes her feelings for Usui. Maki stays over at Karin's house for the first time. How will the family react?!
The cultural festival is coming up, but it's not all fun and games for Karin. New problems arise when her gradma(who looks 16 years old) awakens from her coffen.
Elda is after Usui. We see Elda's past, and why she is so against human and vampires relationships.
Everybody is having fun at the cutural festival, except Karin who is worried about Usui getting his blood sucked by Elda. If Elda gets her way, all of Usui's feelings of love will be erased!
When Ren was 14, he was placed in a human all boys school, and had a roomate who got picked on a lot because of his girl characteristics. Just another worthless human to Ren, or was he?
It's Christmas time. Karin tries to figure out the perfect gift for Usui, and if she should tell him her feelings.
Usui asks Karin on a date, ans she's estatic. Meanwhile Anju is becoming a vampire, and Maki is depressed over Winner- yet Karin is oblivious to both's unhappiness.
