So I don't really remember too much but an older brother to a sister, possibly two sisters... perhaps an aunt or something...

anyhow he suddenly becomes like 5. There may or may be some ecchi... leaning on that there is. The only scene I remember vividly was them going to a rotating sushi place and him wanting fatty tuna but instead getting something with mayo.

[img]http://media.otakuzone.com/store/album/5/32765/T129652429476d1322ca36edc198f2adf9dd1022b524f.png[/img]