My Sister-in-Law Is Always Pretending to Be Her Older Sister

"Stop pretending. I know it's you."

"Oh? But we're already holding each other. You wouldn't want my sister to find out you were cuddling me, would you?"

"It's fine. Your sister has already agreed to us being together."

"Huh? What!?"

Transmigrating as a girl was already frustrating enough. I wanted to use a transmigrator's cheat System to soar to success, but I keep getting forced to live off other people. I might as well do without this System!