Tsugumomo: Sunao Sumeragi Season (1&2)

An extremely straightforward and outspoken person, Sunao is noted for being very direct and quite hot-blooded. When she gets fixated on something, she becomes determined and resolved on accomplishing without putting much thought on her actions. She has a tendency on acting on impulse and is quite short-tempered, which leads her to behave in ways she might repent later on when calmed down. When blood rushes to her head it's hard to convince her to stop, often making unnecessary enemies or making bold decisions. She is very honest and feels no shame in expressing what she thinks openly, even if it comes off as rude.

OVA 

Season 2