Japanese name:

土浦彩葉

Iroha is Shūsuke's childhood friend before Nao's adoption. Having played Doctor with him a lot as a child (which was Shūsuke's excuse to see her naked), she claims that she is Shūsuke's lover (due to the promise Shusuke made with her) and constantly makes advances on him. She also likes to spy on him using a telescope in her room. Her first kiss was with Shusuke.

Voiced by: Marina Inoue

Wikipedia

Edit