Instead of using it, you can always use Mako as your sister-in-law. himeno.

His older brother-in-law, "ran" (rat) was subjected to sexual atrocities on a daily basis. "I can't go out, so I'll go shopping instead." My older brother, who smiles with a cramped smile and is tender, always asks for a return. "I've been using it, so please feel good." An older brother estruses a hardened crotch by scraping it with a razor. I'll sit in the room until I ejaculate. Everything will be troublesome and I won't accept my brother's request. However, my brother-in-law's sexual desire gradually started to run wild.