Looks like part of the shell series. Little Marisa dreams about mommie leaving behind the shell marisa and beginning to love her, when all of a sudden mommie starts to punish her for peeing all over her sister.
Actually, Shell Marisa did not make it. In the coments of post #9468, there is a link to the original SS, try to understand a machine translation of it to learn about it.
The regular Marisa couldn't take it easy with Shell Marisa, who was trying to take it easy, and killed an easy yukkuri. Therefore, she was uneasy and had to die.
1) -I wuv you, mwommie! -Yuhaha! Wu~b, wu~b! -Yu~n! (shno~re) -Let's ignore that bad kid and take it easy, the two of us! -Yuyu~n -Byawaaaah! 2) Mawicha loves mwommie a lot Maricha wanch cho get shpoiled, and jo wu~b wu~b 3) Mwommie... 4) YUBYURU!