If you're looking for manga similar to Yuirika Shoukougun, you might like these titles.
My pet dog (best friend) is now a elementary student!? Corporate slave salaryman Tomoki meets a boy named Leo. Suddenly the boy claims that he was Tomoki's pet dog in his past life and that this time it's his turn to protect Tomoki. A story about life everyday with Leo who, little by little, heals him.
Hasuno, a screenwriter with zero housekeeping skills, decides to ask Higurashi, a junior student at his university whom he has always cared about, to do housework for him as a part-time job. As Higurashi takes care of Hasuno, a senior who he admires, he gradually begins to notice a change in his feelings.