Aikagi 3

AIKAGI 3 is a kinetic visual novel about Yuuto, a high school student whose childhood friend Ai has taken to entering his house uninvited using a spare key she wears around her neck. Despite his protests, she treats his home as her own, greeting him with playful familiarity. The story follows the budding romance between the easygoing but easily-flustered protagonist and his mischievous junior, as their relationship develops through everyday interactions and intimate moments.