An IC card may cover the basic-fare portion, but a Haruka limited-express ticket or a valid combined/QR product is still required.
JR conventional limited express
Haruka: ticket, seat and baggage rules
Kansai Airport · Tennoji · Osaka · Shin-Osaka · Kyoto
30-second answer
What you need before boarding Haruka
A limited-express ticket is required in addition to the basic fare unless both are included in a specific combined product.
JR West's current visitor-ticket guide allows advance seat reservation and also describes use of non-reserved seating when no seat is reserved or the dedicated reserved car is full.
JR West states that oversized-baggage reservations apply only to the Tokaido, Sanyo, Kyushu and Nishi-Kyushu Shinkansen, not conventional trains.
Haruka is a conventional limited express. The 160–250 cm Shinkansen advance-reservation system does not apply to this train.
Baggage storage
Where your bag can go
Dedicated luggage space shown in the Haruka vehicle guide, plus appropriate rack or foot space for smaller bags.
The conventional-train luggage area has no Shinkansen-style oversized-baggage seat reservation requirement; space can fill.
Do not want to carry it?
Check storage at your station
If the bag is impractical to take onboard, use the separate station guide to check lockers and verified luggage-storage alternatives.
In one paragraph
Haruka rule summary
Haruka needs more than IC stored value: use a limited-express ticket or a product including both fare components. JR West's visitor guide supports reserved seats and explains when non-reserved seating may be used. The Shinkansen oversized-baggage reservation system does not apply. Haruka has dedicated luggage space, with racks or foot space for smaller bags.
Special items: The Shinkansen exemption details are not imported into Haruka; conventional-line carry-on rules and onboard capacity govern.