[shinkamalei]

note?
oh u mean the whole "aishteru" thing.
well you can note them back saying often times the "i" after an sh is silenced but there are so many times when its not.
like shimasu
or shinkansen
or shinyama D<
and so you shouldn't omit it in the romaji since it may mess up not only spelling but how they learn it.
besides that, there is also "su" which ending on the verb is pronounced "s" instead of "su".
do they write it like that as well?
and if so, be like there isn't any hiragana that is s or sh.
so yeah