Sumire Teranishi

Sumire is a character in Koikatsu!, being the default NPC of the Big Sister personality. A student known to take her studies much seriously, she is also quite active, loving sports very much. She cares a lot for her lover, and is at times acting protective, really fitting her Onee-san archetype. The Big Sister personality is described as the following: “Aneki-type or older-sister vibe, not used to love, funny at times, but she's still also girly, even a bit tomboyish.”