manga
Summary:
A heart-pounding new life together with my "big sis cousin"!? Masato Ooizumi just entered high school and he finds himself staying with a relative. Living there is his "big sister cousin" who's being way too close with him!? A slightly naughty, living together romcom begins under one roof!!
Related Itoko no Onee-chan ni Amaechau?
manga
