First thing, try to tighten the bolts evenly. Do not over torque. If that fails to stop the leak then replace the o-ring. Have your Honda dealer order you two with their next order and pick them up next week. No shipping that way. Few bucks. 91304-028-000 15X2.5. Call them with your credit card info. Don't waste your gas and time driving around trying to locate something that isn't exactly right. Change both while you're at it since you'll have to take off the outer hose also. The fittings have a male fitting that slides inside the case so you'll have to wiggle/persuade it to come straight out.
Hope that's all there is to it unless it's from the clutch cover, etc.
That clutch cover screw looks virgin! Impressive. Should you need to remove any of those at a later date get yourself a cheap impact driver and learn how to use it. Life can be good and life can be easy.
