Ah... Aging Is so Embarrassing - A Rejuvenating Milky Face Mask

Touyama is a cosmetic lab researcher. Eight years ago, he was called an old man by his beloved little cousin, Riku. Since then, Touyama has been secretly developing a facial mask that will make him appear younger. At long last, his age-be-gone (Trial Version 1) comes to fruition, and he decides to use it and go meet Riku at once! However, once they reunite, Riku punches Touyama and sends him flying! It seems Riku has mistaken him for someone else completely, and invites him up to his apartment. Furthermore, Touyama's finds out his co-worker Tsuda has always loved him! Can old man Touyama protect his chastity!? Watch as this love-hate drama full of beautiful men unfolds!