In this heartwarming story, our protagonist Rimu finds herself in a difficult situation when her mother becomes ill and they are unable to afford their rent without assistance. Desperate for help, she turns to their landlord, an elderly man named Yasuda, who agrees to reduce their rent if he can take care of her instead. As Yasuda helps Rimu with daily tasks like feeding her and dressing her, his attraction towards her innocence and youthful beauty grows stronger. Despite feeling uncomfortable at first, Rimu eventually gives in to his advances out of gratitude for helping her family. Little does she know that this act marks the beginning of a new chapter in their lives filled with lust and taboo desires.

工場勤めの母が病気になり、大家さんのお世話することで家賃を安くしてもらっている為、母親の代わりにヘルパーを懇願する娘のりむ。可愛らしく若い肌、制服越しにもわかる大きな胸に興奮する車椅子の大家。食事の世話や服着せたり身の回りの世話をやらされてシモの世話を求められて戸惑い拒むが母の為と従う。そのうち体を求められて断りきれず言われるがまま…変態大家の凌●の日々が始まる。