The priestess of the temple near Akito's home and the mother of Ai.

She's an enchanting cool beauty who has a gaze which seems to see through everything, as well as a pair of bountiful breasts. A kind, doting parent who always prioritizes her daughter over anything else.

She shows no mercy to any man who tries to come close to her daughter. Akito, the only person who Ai likes aside from her mother, is treated a little harshly by Sumire.

She needs to give birth to a man who can succeed the temple. However, her husband left the house and his whereabouts are currently unknown. Considering her age, conception is difficult and may soon become impossible, so her back is currently pressed against the wall.

Based on the erotic game by Alice Soft. 
 
Akito Natsuki decides to spend his one month long summer holiday in his hometown after his workplace closes down for renovations. With no money and nothing to do he decides to take it easy. 
At home Miyuri, his sister-in-law he was once fond of, and Sayoko who always treated him like her own son, were waiting for him. 
Akito tried to hide his feelings as always and acted out the part of the brother-in-law, but after a slip of the tongue his real feelings are revealed. Then his stagnant relationships with Miyuki and Sayoko start to develop again, and eventually he gets deeply involved with them. 
 
(Source: Getchu, English)

Sumire Jinno