...'s manga / #student council president(5)

Chapter 1-4 - deliveryman & bunny head customer Chapter 5 - student council president and his childhood crush pianist with a trauma Chapter 6 - childhood friend of smart and heir to a restaurant that become lovers

Chapters 1-2: siblings of a 3rd yr highschool, 2nd yr highschool and step sibling of 3rd yr jr.high but the 2 year gap step siblings are more closer.. Chapter 3: the teasing of student council president who was close with the 3rd yr eldest was unconsciously jealous towards the youngest for the attention from SC pres. Chapter 4: college student, convenience store part-timer former co-worker.