Ritsuka Uenoyama

Main Unenoyama's guitar, a bit remodeled with a white pickguard

at around 0:36 you can clearly see a Strymon TimeLine Delay Pedal in Ritsuka Uenoyama pedalboard.

In the Crunchyroll video titled "Mafuyu's Song" from the anime "given," Ritsuka Uenoyama is seen using an MXR CSP036 IL Diavolo Overdrive Pedal, noted for its distinctive blue color.

In this YouTube video at 0:42, Ritsuka Uenoyama can be seen using the MXR Shin Juku Drive Pedal. The show models other MXR pedals. The Shin Juku Drive Pedal designed by Japanese amp guru Shin Suzuki would be a popular pedal at the time.

Around 0:36 you can see a Crybaby Wah in between his Whammy pedal and the main board

Main Unenoyama's guitar, a bit remodeled with a white pickguard

seen in Uenoyama's bedroom

In episode 9 of "Given," Ritsuka Uenoyama is seen using a TC Electronic PolyTune pedal, as shown in a video by Blueanred MP on YouTube.

Seen while Unenoyama listens to music in his bedroom

Around 0:36 you can see the Whammy first on Uenoyama's pedal chain

In the YouTube video titled "Given - Fuyu No Hanashi【 Capitulo 9】," Ritsuka Uenoyama is shown using a Marshall JCM900 4100 100-watt 2-channel Tube Head as his studio guitar amp.

In the YouTube video "Given - Fuyu No Hanashi【 Capitulo 9】" by Blueanred MP, Ritsuka Uenoyama uses a Marshall 425A Cabinet in the studio.

In Season 1, Episode 1 of the TV series Given during the intro at approximately 4:00 runtime, Ritsuka Uenoyama retrieves a spare pack of strings from his classroom and changes the guitar strings of Mafuyu Sato's Gibson ES-330.

The strings have a parody name in the show, being called DAbbanio XL Niccolum Wound, Regular Light Gauge strings.

The brand and product this is parodying is the D'Addario XL Nickel Wound Regular Light Gauge strings.

Both are six strings, 10-13-17-26-36-46.

Note also that the descriptor in the top left of the D'Addario pack, "Bright sound, right wound" has been reduced to just "right wound" on the parody DAbbanio pack and that the product code is conveniently covered by the string winder.