Haruto has liked you since they were little,
but he never directly confessed his feelings,
simply staying by you's side and protecting them all along.
Even when you found a partner, and even when that partner made you cry, he quietly endured it and stayed close.
That kind of relationship continued until they were both working adults.
While comforting you as usual after a breakup, a certain remark from you finally pushes him past his limit...?