diff --git a/DESCRIPTION b/DESCRIPTION
index 8179ca0bb5..8cedc3e037 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -27,7 +27,8 @@ Authors@R: c(
     person("Kangjie", "Zhang", role = "aut"),
     person("Zelos", "Zhu", role = "aut"),
     person("F. Hoffmann-La Roche AG", role = c("cph", "fnd")),
-    person("GlaxoSmithKline LLC", role = c("cph", "fnd"))
+    person("GlaxoSmithKline LLC", role = c("cph", "fnd")),
+    person("Shunsuke", "Goto", role = "aut")
   )
 Description: A toolbox for programming Clinical Data Interchange Standards
     Consortium (CDISC) compliant Analysis Data Model (ADaM) datasets in R.
diff --git a/NAMESPACE b/NAMESPACE
index 9bab92b1cf..47114d4e37 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -146,6 +146,7 @@ export(list_all_templates)
 export(list_tte_source_objects)
 export(max_cond)
 export(min_cond)
+export(my_first_fcn)
 export(negate_vars)
 export(params)
 export(print_named_list)
diff --git a/NEWS.md b/NEWS.md
index 91fb0405c8..7948f14d60 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -62,6 +62,8 @@ again. (#2462)
 
 - New `country_code_lookup()` metadata added to decode countries based on [ISO 3166 codes](https://www.iso.org/iso-3166-country-codes.html). (#2388)
 
+- Added function `my_first_fcn()` (#1839).
+
 ## Updates of Existing Functions
 
 - `group_var` (optional) parameter is added to `derive_var_trtemfl()` to derive `TRTEMFL` for AE data if the data are collected as one episode of AE with multiple lines. (#2302)
diff --git a/R/my_first_fcn.R b/R/my_first_fcn.R
new file mode 100644
index 0000000000..f40d7a54da
--- /dev/null
+++ b/R/my_first_fcn.R
@@ -0,0 +1,21 @@
+#' my_first_fcn
+#'
+#' my first function
+#'
+#' @details
+#' This is a function created as dummy.
+#'
+#' @keywords other_advanced
+#'
+#' @family other_advanced
+#'
+#' @return
+#' This function returns the Character "Welcome to the admiral family!".
+#'
+#' @export
+#'
+#' @examples
+#' my_first_fcn() ## returns "Welcome to the admiral family!"
+my_first_fcn <- function() {
+  "Welcome to the admiral family!"
+}
diff --git a/inst/WORDLIST b/inst/WORDLIST
index e3a009b79f..a44188656c 100644
--- a/inst/WORDLIST
+++ b/inst/WORDLIST
@@ -284,6 +284,7 @@ eg
 egfr
 evaluable
 exprs
+fcn
 fil
 findable
 fmt
diff --git a/man/admiral-package.Rd b/man/admiral-package.Rd
index a1539a481d..aeaceee83f 100644
--- a/man/admiral-package.Rd
+++ b/man/admiral-package.Rd
@@ -47,6 +47,7 @@ Authors:
   \item Phillip Webster
   \item Kangjie Zhang
   \item Zelos Zhu
+  \item Shunsuke Goto
 }
 
 Other contributors:
diff --git a/man/list_tte_source_objects.Rd b/man/list_tte_source_objects.Rd
index db624766b1..a6e310c726 100644
--- a/man/list_tte_source_objects.Rd
+++ b/man/list_tte_source_objects.Rd
@@ -21,6 +21,7 @@ list_tte_source_objects()
 }
 \seealso{
 Other Advanced Functions: 
+\code{\link{my_first_fcn}()},
 \code{\link{params}()}
 }
 \concept{other_advanced}
diff --git a/man/my_first_fcn.Rd b/man/my_first_fcn.Rd
new file mode 100644
index 0000000000..1d49812200
--- /dev/null
+++ b/man/my_first_fcn.Rd
@@ -0,0 +1,27 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/my_first_fcn.R
+\name{my_first_fcn}
+\alias{my_first_fcn}
+\title{my_first_fcn}
+\usage{
+my_first_fcn()
+}
+\value{
+This function returns the Character "Welcome to the admiral family!".
+}
+\description{
+my first function
+}
+\details{
+This is a function created as dummy.
+}
+\examples{
+my_first_fcn() ## returns "Welcome to the admiral family!"
+}
+\seealso{
+Other Advanced Functions: 
+\code{\link{list_tte_source_objects}()},
+\code{\link{params}()}
+}
+\concept{other_advanced}
+\keyword{other_advanced}
diff --git a/man/params.Rd b/man/params.Rd
index ba41405a43..3e1c8b4176 100644
--- a/man/params.Rd
+++ b/man/params.Rd
@@ -100,7 +100,8 @@ call_derivation(
 \code{\link[=call_derivation]{call_derivation()}}
 
 Other Advanced Functions: 
-\code{\link{list_tte_source_objects}()}
+\code{\link{list_tte_source_objects}()},
+\code{\link{my_first_fcn}()}
 }
 \concept{other_advanced}
 \keyword{other_advanced}
diff --git a/tests/testthat/test-my_first_fcn.R b/tests/testthat/test-my_first_fcn.R
new file mode 100644
index 0000000000..1d49323830
--- /dev/null
+++ b/tests/testthat/test-my_first_fcn.R
@@ -0,0 +1,9 @@
+# my_first_fcn ----
+## Test 1: <Explanation of the test> ----
+test_that("multiplication works", {
+  expected_output <- "Welcome to the admiral family!"
+
+  actual_output <- my_first_fcn()
+
+  expect_equal(expected_output, actual_output)
+})