Type B

• Dislike restrictions and go own way
• Non-stereotyped actions
• Non-stereotyped thinking
• Self-conscious and straight expressions
• Less particular with of things
• Not conscious of circumstances
• Don't care social rules and customs
• Rapid actions
• Judge by correctness
• Pragmatic and objective thinking
• Continuous, intensive and wide-ranging interest
• Apt to stick to the past
• Optimistic about the future
• Straightly show feeling -- less than Type O and more than Type A and AB
• Emotional wounds heal fast and completely
• Less domestic inclination
• Put the priority to own interest
• Easily absorbed to other's interests
• Not very ambitious -- less than Type O and A, more than Type AB

My summary from Mr. Masahiko NOMI's book "Ketsueki-gata Josei Hakusho" (Blood-Type Woman White Paper). 

There are both frank and unsociable type Bs. Bs are retracted like the latter, or acquires attitudes without greetings like the former -- it is hard to acquire the manners and greetings that suits to the surroundings and the society. Everyone easily understands Bs are familiar, do not discriminate and believe people, before long. Openness is a common property of type B. 

Type B, contrary to type A, is the least conscious of the world and the surroundings.

As type B is not conscious of surroundings, B's going-my-way behavior comes out. It dislikes to be complied with minor rules, restrained and constrained, extremely. Strong interest means full of enjoying heart. A type-B person does not consider profit and loss like type O or it does not calculate worldly value like type A.

As B's interest is directed towards the external world, thoughts become scientific and practical as it respects facts. Type-B person is not influenced by common sense or customs, so it has wide and flexible comprehension power. 

Type B is not stable. Even if it is seen as stable, whether or not it is moving a body continually, it uses its brain rotates swiftly. Type B's emotion changes sensitively. It is able to comprehend other people's situation and have interest without subjectivity. So B is compassionate and sometimes takes an action swiftly.

However, type B's emotion is not strong. It only seems so, because it expresses and does not restrain when a feeling breaks out. 

Although B sometimes clings to the its thought  terribly stubbornly. In this case, Type B shows stubbornness.