Games like Okayu Nyumu!

If you finished Okayu Nyumu!, the closest matches are Lián Yīxiē Xiǎo Qīngxīn de Lièqí Gùshì, Letters From a Rainy Day: Oceans and Lace, Koi Suru Otome to Shugo no Tate: Bara no Seibo, Obsessive Love Adventure Utsuro's Diary and Simple 1500 Series Vol. 81: The Renai Adventure - Okaeri!. All 10 share its adventure genre and are ranked by how closely their themes and modes overlap.