Koko Jidai Ni Gomandatta Jou Sama To No Dosei Seikatsu Ha Igaito Igokochi Ga Warukunai -

Maybe the Protagonist is the only one who can handle spiders/bugs. The Rituals:

In a hyper-connected society, people feel utterly alone. The Jou-sama, with her loud demands for attention, kills that silence. Even when she is nagging, she is there . Her presence validates the protagonist’s existence. She needs him to survive. For a person who feels invisible at work, being needed (even for trivial things like opening a milk carton) is narcotic. Maybe the Protagonist is the only one who

Believe it or not, living with a former heiress has perks. She might teach you which cutlery is correct for dessert (useless, but oddly charming). She might demand you brew tea properly—and suddenly your evenings feel five-star. Her insistence on quality, even on a budget, upgrades your life. You start buying better soap. You stop eating straight from the pan. Her arrogance becomes an accidental life coach. Even when she is nagging, she is there

Megumi's high school best friend who helps Yamamoto navigate Megumi’s family issues. For a person who feels invisible at work,

The primary antagonist whose eventual arrest allows Megumi to start looking toward a life of her own, though his presence lingers as a source of trauma. Key Themes & Reception Koko Jidai Ni Gomandatta Jou Sama to No Dosei ... - CDJapan

しかし、再会した彼女の腕には痛々しい青あざがありました。彼女が当時の恋人からDV（家庭内暴力）を受けていることを知った山本は、一晩のつもりで彼女を自分のアパートに匿います。そこから、かつての「女王様」と「達観した男子」による、奇妙で居心地の良い同棲生活が幕を開けます。 登場人物の魅力

This makes her sympathetic without erasing her past wrongs.