Seiko Osabe

Personality
Seiko appears to be a kind, doting mother and an obedient wife, otherwise being friendly to family, friends and acquaintances. She is frequently described as "overprotective" over Seiichi by her family members, notably Shigeru and his mother. However, one quickly finds out she is obsessed with Seiichi, as her over-protectiveness stems from the desire of having him all to herself. This desire can reach extremes to which Seiko approaches Seiichi romantically, in an effort to desert him from a significant other that might take away his attention and love from her. Along with the over-protectiveness, she is highly manipulative and gaslights Seiichi into many things, from believing she did not push Shigeru off the cliff to pitying her and taking all the blame for her actions.